18629132290 has 16 divisors (see below), whose sum is σ = 33547179960. Its totient is φ = 7448376960.

The previous prime is 18629132267. The next prime is 18629132297. The reversal of 18629132290 is 9223192681.

It can be written as a sum of positive squares in 4 ways, for example, as 18256603689 + 372528601 = 135117^2 + 19301^2 .

It is not an unprimeable number, because it can be changed into a prime (18629132297) 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, 385545 + ... + 431164.

Almost surely, 2^18629132290 is an apocalyptic number.

18629132290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18629132290 is a deficient number, since it is larger than the sum of its proper divisors (14918047670).

18629132290 is a wasteful number, since it uses less digits than its factorization.

18629132290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818997.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 18629132290 in words is "eighteen billion, six hundred twenty-nine million, one hundred thirty-two thousand, two hundred ninety".