1557016146 has 24 divisors (see below), whose sum is σ = 3855468864. Its totient is φ = 444861720.

The previous prime is 1557016103. The next prime is 1557016157. The reversal of 1557016146 is 6416107551.

It is a happy number.

1557016146 is a `hidden beast` number, since 1 + 557 + 0 + 1 + 61 + 46 = 666.

1557016146 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1557016146.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6178510 + ... + 6178761.

It is an arithmetic number, because the mean of its divisors is an integer number (160644536).

Almost surely, 2^1557016146 is an apocalyptic number.

1557016146 is an abundant number, since it is smaller than the sum of its proper divisors (2298452718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1557016146 is a wasteful number, since it uses less digits than its factorization.

1557016146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12357286 (or 12357283 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1557016146 is about 39459.0439063087. The cubic root of 1557016146 is about 1159.0380813738.

The spelling of 1557016146 in words is "one billion, five hundred fifty-seven million, sixteen thousand, one hundred forty-six".