1931266242 has 24 divisors (see below), whose sum is σ = 4185224316. Its totient is φ = 643630176.

The previous prime is 1931266133. The next prime is 1931266247. The reversal of 1931266242 is 2426621391.

It is a happy number.

1931266242 is a `hidden beast` number, since 1 + 9 + 3 + 1 + 26 + 624 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1374259041 + 557007201 = 37071^2 + 23601^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1931266197 and 1931266206.

It is not an unprimeable number, because it can be changed into a prime (1931266247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158968 + ... + 170684.

Almost surely, 2^1931266242 is an apocalyptic number.

1931266242 is an abundant number, since it is smaller than the sum of its proper divisors (2253958074).

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

1931266242 is a wasteful number, since it uses less digits than its factorization.

1931266242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20882 (or 20879 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1931266242 is about 43946.1743727483. The cubic root of 1931266242 is about 1245.3192929559.

The spelling of 1931266242 in words is "one billion, nine hundred thirty-one million, two hundred sixty-six thousand, two hundred forty-two".