1557103338 has 240 divisors, whose sum is σ = 4412802240. Its totient is φ = 400495104.

The previous prime is 1557103337. The next prime is 1557103357. The reversal of 1557103338 is 8333017551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1557103337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 26391553 + ... + 26391611.

It is an arithmetic number, because the mean of its divisors is an integer number (18386676).

Almost surely, 2^1557103338 is an apocalyptic number.

1557103338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1557103338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2206401120).

1557103338 is an abundant number, since it is smaller than the sum of its proper divisors (2855698902).

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

1557103338 is a wasteful number, since it uses less digits than its factorization.

1557103338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1557103338 is about 39460.1487326138. The cubic root of 1557103338 is about 1159.0597161231.

The spelling of 1557103338 in words is "one billion, five hundred fifty-seven million, one hundred three thousand, three hundred thirty-eight".