138073802 has 4 divisors (see below), whose sum is σ = 207110706. Its totient is φ = 69036900.

The previous prime is 138073787. The next prime is 138073861. The reversal of 138073802 is 208370831.

138073802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 106275481 + 31798321 = 10309^2 + 5639^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34518449 + ... + 34518452.

Almost surely, 2^138073802 is an apocalyptic number.

138073802 is a deficient number, since it is larger than the sum of its proper divisors (69036904).

138073802 is an equidigital number, since it uses as much as digits as its factorization.

138073802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69036903.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 138073802 is about 11750.4809263281. The cubic root of 138073802 is about 516.8570302805.

The spelling of 138073802 in words is "one hundred thirty-eight million, seventy-three thousand, eight hundred two".