1557038112 has 144 divisors (see below), whose sum is σ = 4782177792. Its totient is φ = 442283520.

The previous prime is 1557038047. The next prime is 1557038113. The reversal of 1557038112 is 2118307551.

It is not an unprimeable number, because it can be changed into a prime (1557038113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 897598 + ... + 899330.

It is an arithmetic number, because the mean of its divisors is an integer number (33209568).

Almost surely, 2^1557038112 is an apocalyptic number.

1557038112 is a gapful number since it is divisible by the number (12) 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 1557038112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2391088896).

1557038112 is an abundant number, since it is smaller than the sum of its proper divisors (3225139680).

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

1557038112 is a wasteful number, since it uses less digits than its factorization.

1557038112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951 (or 1936 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 1557038112 is about 39459.3222445596. The cubic root of 1557038112 is about 1159.0435318227.

The spelling of 1557038112 in words is "one billion, five hundred fifty-seven million, thirty-eight thousand, one hundred twelve".