1657143916 has 6 divisors (see below), whose sum is σ = 2900001860. Its totient is φ = 828571956.

The previous prime is 1657143899. The next prime is 1657143923. The reversal of 1657143916 is 6193417561.

It is a super-2 number, since 2×1657143916² = 5492251916671630112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207142986 + ... + 207142993.

Almost surely, 2^1657143916 is an apocalyptic number.

It is an amenable number.

1657143916 is a deficient number, since it is larger than the sum of its proper divisors (1242857944).

1657143916 is a wasteful number, since it uses less digits than its factorization.

1657143916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414285983 (or 414285981 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 1657143916 is about 40708.0325734369. The cubic root of 1657143916 is about 1183.3686932677.

The spelling of 1657143916 in words is "one billion, six hundred fifty-seven million, one hundred forty-three thousand, nine hundred sixteen".