1557116204 has 48 divisors (see below), whose sum is σ = 3258178560. Its totient is φ = 637184640.

The previous prime is 1557116201. The next prime is 1557116213. The reversal of 1557116204 is 4026117551.

It is a super-2 number, since 2×1557116204² = 4849221745518739232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1557116201) 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, 39527 + ... + 68385.

It is an arithmetic number, because the mean of its divisors is an integer number (67878720).

Almost surely, 2^1557116204 is an apocalyptic number.

1557116204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1557116204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1629089280).

1557116204 is an abundant number, since it is smaller than the sum of its proper divisors (1701062356).

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

1557116204 is a wasteful number, since it uses less digits than its factorization.

1557116204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28958 (or 28956 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1557116204 is about 39460.3117575115. The cubic root of 1557116204 is about 1159.0629084656.

The spelling of 1557116204 in words is "one billion, five hundred fifty-seven million, one hundred sixteen thousand, two hundred four".