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2197830489 = 37125214093
BaseRepresentation
bin1000001100000000…
…0011101101011001
312200011121100122020
42003000003231121
514000121033424
61002031045053
7105315152031
oct20300035531
95604540566
102197830489
11a28688638
12514070789
1329045201a
1416bc748c1
15cce3e079
hex83003b59

2197830489 has 16 divisors (see below), whose sum is σ = 2973619584. Its totient is φ = 1443657600.

The previous prime is 2197830487. The next prime is 2197830521. The reversal of 2197830489 is 9840387912.

It is not a de Polignac number, because 2197830489 - 21 = 2197830487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2197830487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534927 + ... + 539019.

It is an arithmetic number, because the mean of its divisors is an integer number (185851224).

Almost surely, 22197830489 is an apocalyptic number.

It is an amenable number.

2197830489 is a deficient number, since it is larger than the sum of its proper divisors (775789095).

2197830489 is a wasteful number, since it uses less digits than its factorization.

2197830489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 2197830489 is about 46881.0248288153. The cubic root of 2197830489 is about 1300.1637839009.

The spelling of 2197830489 in words is "two billion, one hundred ninety-seven million, eight hundred thirty thousand, four hundred eighty-nine".

Divisors: 1 3 71 213 2521 4093 7563 12279 178991 290603 536973 871809 10318453 30955359 732610163 2197830489