1657316842 has 32 divisors (see below), whose sum is σ = 2813698944. Its totient is φ = 727795200.

The previous prime is 1657316827. The next prime is 1657316849. The reversal of 1657316842 is 2486137561.

It is a super-2 number, since 2×1657316842² = 5493398229553705928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1657316849) 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, 6217 + ... + 57907.

It is an arithmetic number, because the mean of its divisors is an integer number (87928092).

Almost surely, 2^1657316842 is an apocalyptic number.

1657316842 is a deficient number, since it is larger than the sum of its proper divisors (1156382102).

1657316842 is a wasteful number, since it uses less digits than its factorization.

1657316842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51774.

The product of its digits is 241920, while the sum is 43.

The square root of 1657316842 is about 40710.1564968743. The cubic root of 1657316842 is about 1183.4098540655.

The spelling of 1657316842 in words is "one billion, six hundred fifty-seven million, three hundred sixteen thousand, eight hundred forty-two".