309326449842 has 24 divisors (see below), whose sum is σ = 676356003180. Its totient is φ = 102162863520.

The previous prime is 309326449819. The next prime is 309326449847. The reversal of 309326449842 is 248944623903.

309326449842 is a `hidden beast` number, since 3 + 0 + 93 + 2 + 64 + 498 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 307635513201 + 1690936641 = 554649^2 + 41121^2 .

It is not an unprimeable number, because it can be changed into a prime (309326449847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78827409 + ... + 78831332.

Almost surely, 2^309326449842 is an apocalyptic number.

309326449842 is an abundant number, since it is smaller than the sum of its proper divisors (367029553338).

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

309326449842 is a wasteful number, since it uses less digits than its factorization.

309326449842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157658858 (or 157658855 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 309326449842 in words is "three hundred nine billion, three hundred twenty-six million, four hundred forty-nine thousand, eight hundred forty-two".