1538881204 has 12 divisors (see below), whose sum is σ = 3077762464. Its totient is φ = 659520504.

The previous prime is 1538881177. The next prime is 1538881213. The reversal of 1538881204 is 4021888351.

1538881204 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27479994 + ... + 27480049.

Almost surely, 2^1538881204 is an apocalyptic number.

1538881204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1538881204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1538881204 is a wasteful number, since it uses less digits than its factorization.

1538881204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54960054 (or 54960052 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 1538881204 is about 39228.5763697843. The cubic root of 1538881204 is about 1154.5206318909.

The spelling of 1538881204 in words is "one billion, five hundred thirty-eight million, eight hundred eighty-one thousand, two hundred four".