309795973386 has 32 divisors (see below), whose sum is σ = 621152064000. Its totient is φ = 103005519216.

The previous prime is 309795973373. The next prime is 309795973387. The reversal of 309795973386 is 683379597903.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 309795973386.

It is not an unprimeable number, because it can be changed into a prime (309795973387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6043315 + ... + 6094361.

It is an arithmetic number, because the mean of its divisors is an integer number (19411002000).

Almost surely, 2^309795973386 is an apocalyptic number.

309795973386 is an abundant number, since it is smaller than the sum of its proper divisors (311356090614).

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

309795973386 is a wasteful number, since it uses less digits than its factorization.

309795973386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53578.

The product of its (nonzero) digits is 231472080, while the sum is 69.

The spelling of 309795973386 in words is "three hundred nine billion, seven hundred ninety-five million, nine hundred seventy-three thousand, three hundred eighty-six".