122945511938 has 18 divisors (see below), whose sum is σ = 189565544763. Its totient is φ = 59802404400.

The previous prime is 122945511917. The next prime is 122945511971. The reversal of 122945511938 is 839115549221.

It can be written as a sum of positive squares in 5 ways, for example, as 101720809969 + 21224701969 = 318937^2 + 145687^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247937.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18343988 + ... + 18350688.

Almost surely, 2^122945511938 is an apocalyptic number.

122945511938 is a deficient number, since it is larger than the sum of its proper divisors (66620032825).

122945511938 is an frugal number, since it uses more digits than its factorization.

122945511938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13478 (or 6740 counting only the distinct ones).

The product of its digits is 777600, while the sum is 50.

Multiplying 122945511938 by its sum of digits (50), we get a square (6147275596900 = 2479370²).

The spelling of 122945511938 in words is "one hundred twenty-two billion, nine hundred forty-five million, five hundred eleven thousand, nine hundred thirty-eight".