926139531408 has 640 divisors, whose sum is σ = 3049986121728. Its totient is φ = 235737464832.

The previous prime is 926139531407. The next prime is 926139531451. The reversal of 926139531408 is 804135931629.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (926139531407) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5353407610 + ... + 5353407782.

Almost surely, 2^926139531408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 926139531408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524993060864).

926139531408 is an abundant number, since it is smaller than the sum of its proper divisors (2123846590320).

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

926139531408 is a wasteful number, since it uses less digits than its factorization.

926139531408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 926139531408 in words is "nine hundred twenty-six billion, one hundred thirty-nine million, five hundred thirty-one thousand, four hundred eight".