12892187944 has 32 divisors (see below), whose sum is σ = 24834418920. Its totient is φ = 6269792256.

The previous prime is 12892187941. The next prime is 12892187947. The reversal of 12892187944 is 44978129821.

It is an interprime number because it is at equal distance from previous prime (12892187941) and next prime (12892187947).

It can be written as a sum of positive squares in 4 ways, for example, as 12513107044 + 379080900 = 111862^2 + 19470^2 .

It is not an unprimeable number, because it can be changed into a prime (12892187941) 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, 1259712 + ... + 1269904.

Almost surely, 2^12892187944 is an apocalyptic number.

It is an amenable number.

12892187944 is a deficient number, since it is larger than the sum of its proper divisors (11942230976).

12892187944 is a wasteful number, since it uses less digits than its factorization.

12892187944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14509 (or 14505 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The spelling of 12892187944 in words is "twelve billion, eight hundred ninety-two million, one hundred eighty-seven thousand, nine hundred forty-four".