138687802 has 64 divisors (see below), whose sum is σ = 262051200. Its totient is φ = 54190080.

The previous prime is 138687799. The next prime is 138687833. The reversal of 138687802 is 208786831.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205738 + ... + 206410.

It is an arithmetic number, because the mean of its divisors is an integer number (4094550).

Almost surely, 2^138687802 is an apocalyptic number.

138687802 is a deficient number, since it is larger than the sum of its proper divisors (123363398).

138687802 is a wasteful number, since it uses less digits than its factorization.

138687802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 138687802 is about 11776.5785353811. The cubic root of 138687802 is about 517.6220341234.

The spelling of 138687802 in words is "one hundred thirty-eight million, six hundred eighty-seven thousand, eight hundred two".