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1930532497 = 13913888723
BaseRepresentation
bin111001100010001…
…1001011010010001
311222112122012201121
41303010121122101
512423204014442
6515322002241
765561153425
oct16304313221
94875565647
101930532497
1190080a703
1245a646381
13249c6402a
14144574b85
15b473e967
hex73119691

1930532497 has 4 divisors (see below), whose sum is σ = 1944421360. Its totient is φ = 1916643636.

The previous prime is 1930532467. The next prime is 1930532501. The reversal of 1930532497 is 7942350391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7942350391 = 35171225821.

It is a cyclic number.

It is not a de Polignac number, because 1930532497 - 27 = 1930532369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1930532447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6944223 + ... + 6944500.

It is an arithmetic number, because the mean of its divisors is an integer number (486105340).

Almost surely, 21930532497 is an apocalyptic number.

It is an amenable number.

1930532497 is a deficient number, since it is larger than the sum of its proper divisors (13888863).

1930532497 is a wasteful number, since it uses less digits than its factorization.

1930532497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13888862.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 1930532497 is about 43937.8253558366. The cubic root of 1930532497 is about 1245.1615618036.

The spelling of 1930532497 in words is "one billion, nine hundred thirty million, five hundred thirty-two thousand, four hundred ninety-seven".

Divisors: 1 139 13888723 1930532497