1538134908390 has 64 divisors (see below), whose sum is σ = 4101839248320. Its totient is φ = 410154693120.

The previous prime is 1538134908347. The next prime is 1538134908407. The reversal of 1538134908390 is 938094318351.

1538134908390 is a `hidden beast` number, since 1 + 5 + 38 + 134 + 90 + 8 + 390 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8997310 + ... + 9166670.

It is an arithmetic number, because the mean of its divisors is an integer number (64091238255).

Almost surely, 2^{1538134908390} is an apocalyptic number.

1538134908390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1538134908390 is an abundant number, since it is smaller than the sum of its proper divisors (2563704339930).

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

1538134908390 is a wasteful number, since it uses less digits than its factorization.

1538134908390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203014 (or 203008 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 1538134908390 in words is "one trillion, five hundred thirty-eight billion, one hundred thirty-four million, nine hundred eight thousand, three hundred ninety".