1538349051204 has 81 divisors (see below), whose sum is σ = 4523631940191. Its totient is φ = 439513416720.

The previous prime is 1538349051149. The next prime is 1538349051227. The reversal of 1538349051204 is 4021509438351.

The square root of 1538349051204 is 1240302.

It is a perfect power (a square), and thus also a powerful number.

1538349051204 is a `hidden beast` number, since 1 + 5 + 38 + 3 + 490 + 5 + 120 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1538349051204.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 52077919 + ... + 52107449.

Almost surely, 2^{1538349051204} is an apocalyptic number.

1538349051204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1538349051204 is the 1240302-nd square number.

It is an amenable number.

1538349051204 is an abundant number, since it is smaller than the sum of its proper divisors (2985282888987).

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

1538349051204 is an frugal number, since it uses more digits than its factorization.

1538349051204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59086 (or 29543 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 1538349051204 in words is "one trillion, five hundred thirty-eight billion, three hundred forty-nine million, fifty-one thousand, two hundred four".