1959917157 has 48 divisors (see below), whose sum is σ = 3191550336. Its totient is φ = 1148784000.

The previous prime is 1959917153. The next prime is 1959917189. The reversal of 1959917157 is 7517199591.

It is not a de Polignac number, because 1959917157 - 2² = 1959917153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1959917153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369907 + ... + 375167.

It is an arithmetic number, because the mean of its divisors is an integer number (66490632).

Almost surely, 2^1959917157 is an apocalyptic number.

It is an amenable number.

1959917157 is a deficient number, since it is larger than the sum of its proper divisors (1231633179).

1959917157 is a wasteful number, since it uses less digits than its factorization.

1959917157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402 (or 5399 counting only the distinct ones).

The product of its digits is 893025, while the sum is 54.

The square root of 1959917157 is about 44270.9516161557. The cubic root of 1959917157 is about 1251.4473170652.

The spelling of 1959917157 in words is "one billion, nine hundred fifty-nine million, nine hundred seventeen thousand, one hundred fifty-seven".