1292930138 has 8 divisors (see below), whose sum is σ = 2053477332. Its totient is φ = 608437696.

The previous prime is 1292930137. The next prime is 1292930159. The reversal of 1292930138 is 8310392921.

It can be written as a sum of positive squares in 2 ways, for example, as 1033172449 + 259757689 = 32143^2 + 16117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1292930131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19013645 + ... + 19013712.

Almost surely, 2^1292930138 is an apocalyptic number.

1292930138 is a deficient number, since it is larger than the sum of its proper divisors (760547194).

1292930138 is a wasteful number, since it uses less digits than its factorization.

1292930138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38027376.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1292930138 is about 35957.3377490603. The cubic root of 1292930138 is about 1089.4108248739.

The spelling of 1292930138 in words is "one billion, two hundred ninety-two million, nine hundred thirty thousand, one hundred thirty-eight".