3109778416938 has 16 divisors (see below), whose sum is σ = 6219581148576. Its totient is φ = 1036588753200.

The previous prime is 3109778416933. The next prime is 3109778416967. The reversal of 3109778416938 is 8396148779013.

It is a super-3 number, since 3×3109778416938³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3109778416933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938845 + ... + 2664767.

It is an arithmetic number, because the mean of its divisors is an integer number (388723821786).

Almost surely, 2^{3109778416938} is an apocalyptic number.

3109778416938 is an abundant number, since it is smaller than the sum of its proper divisors (3109802731638).

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

3109778416938 is a wasteful number, since it uses less digits than its factorization.

3109778416938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026229.

The product of its (nonzero) digits is 54867456, while the sum is 66.

The spelling of 3109778416938 in words is "three trillion, one hundred nine billion, seven hundred seventy-eight million, four hundred sixteen thousand, nine hundred thirty-eight".