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1926244321 = 438892
BaseRepresentation
bin111001011010000…
…0010011111100001
311222020120100110021
41302310002133201
512421104304241
6515050033441
765506543441
oct16264023741
94866510407
101926244321
118a9350961
12459118881
132490c2251
14143b7a121
15b41940d1
hex72d027e1

1926244321 has 3 divisors (see below), whose sum is σ = 1926288211. Its totient is φ = 1926200432.

The previous prime is 1926244277. The next prime is 1926244337. The reversal of 1926244321 is 1234426291.

The square root of 1926244321 is 43889.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1818084321 + 108160000 = 42639^2 + 10400^2 .

It is not a de Polignac number, because 1926244321 - 225 = 1892689889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1926247321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21945 + ... + 65833.

Almost surely, 21926244321 is an apocalyptic number.

1926244321 is the 43889-th square number.

1926244321 is the 21945-th centered octagonal number.

It is an amenable number.

1926244321 is a deficient number, since it is larger than the sum of its proper divisors (43890).

1926244321 is an frugal number, since it uses more digits than its factorization.

1926244321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87778 (or 43889 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The cubic root of 1926244321 is about 1244.2389441259.

Multiplying 1926244321 by its product of digits (20736), we get a square (39942602240256 = 63200162).

The spelling of 1926244321 in words is "one billion, nine hundred twenty-six million, two hundred forty-four thousand, three hundred twenty-one".

Divisors: 1 43889 1926244321