1538731234656 has 192 divisors, whose sum is σ = 5595386549760. Its totient is φ = 399670433280.

The previous prime is 1538731234639. The next prime is 1538731234673. The reversal of 1538731234656 is 6564321378351.

1538731234656 is a `hidden beast` number, since 1 + 53 + 8 + 7 + 3 + 123 + 465 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1538731234639) and next prime (1538731234673).

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, 11498011 + ... + 11631066.

It is an arithmetic number, because the mean of its divisors is an integer number (29142638280).

Almost surely, 2^{1538731234656} is an apocalyptic number.

1538731234656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1538731234656 is an abundant number, since it is smaller than the sum of its proper divisors (4056655315104).

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

1538731234656 is a wasteful number, since it uses less digits than its factorization.

1538731234656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23129114 (or 23129100 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The spelling of 1538731234656 in words is "one trillion, five hundred thirty-eight billion, seven hundred thirty-one million, two hundred thirty-four thousand, six hundred fifty-six".