309325618474 has 4 divisors (see below), whose sum is σ = 463988427714. Its totient is φ = 154662809236.

The previous prime is 309325618429. The next prime is 309325618513. The reversal of 309325618474 is 474816523903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 474816523903 = 17 ⋅27930383759.

It can be written as a sum of positive squares in only one way, i.e., 297632440249 + 11693178225 = 545557^2 + 108135^2 .

It is a super-2 number, since 2×309325618474² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77331404617 + ... + 77331404620.

It is a 1-persistent number, because it is pandigital, but 2⋅309325618474 = 618651236948 is not.

Almost surely, 2^309325618474 is an apocalyptic number.

309325618474 is a deficient number, since it is larger than the sum of its proper divisors (154662809240).

309325618474 is a wasteful number, since it uses less digits than its factorization.

309325618474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154662809239.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 309325618474 in words is "three hundred nine billion, three hundred twenty-five million, six hundred eighteen thousand, four hundred seventy-four".