138633802 has 8 divisors (see below), whose sum is σ = 208001412. Its totient is φ = 69300000.

The previous prime is 138633797. The next prime is 138633809. The reversal of 138633802 is 208336831.

It can be written as a sum of positive squares in 2 ways, for example, as 129937201 + 8696601 = 11399^2 + 2949^2 .

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 (138633809) 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, 9052 + ... + 18952.

Almost surely, 2^138633802 is an apocalyptic number.

138633802 is a deficient number, since it is larger than the sum of its proper divisors (69367610).

138633802 is an equidigital number, since it uses as much as digits as its factorization.

138633802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16904.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 138633802 is about 11774.2856258883. The cubic root of 138633802 is about 517.5548443201.

The spelling of 138633802 in words is "one hundred thirty-eight million, six hundred thirty-three thousand, eight hundred two".