309620111809 has 8 divisors (see below), whose sum is σ = 312668557760. Its totient is φ = 306572481936.

The previous prime is 309620111803. The next prime is 309620111861. The reversal of 309620111809 is 908111026903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 309620111809 - 2²⁵ = 309586557377 is a prime.

It is a super-2 number, since 2×309620111809² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309620111803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573007 + ... + 973435.

It is an arithmetic number, because the mean of its divisors is an integer number (39083569720).

Almost surely, 2^309620111809 is an apocalyptic number.

It is an amenable number.

309620111809 is a deficient number, since it is larger than the sum of its proper divisors (3048445951).

309620111809 is a wasteful number, since it uses less digits than its factorization.

309620111809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408039.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 309620111809 in words is "three hundred nine billion, six hundred twenty million, one hundred eleven thousand, eight hundred nine".