9138623402 has 16 divisors (see below), whose sum is σ = 13827179520. Its totient is φ = 4529735952.

The previous prime is 9138623399. The next prime is 9138623443. The reversal of 9138623402 is 2043268319.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63728 + ... + 149460.

It is an arithmetic number, because the mean of its divisors is an integer number (864198720).

Almost surely, 2^9138623402 is an apocalyptic number.

9138623402 is a deficient number, since it is larger than the sum of its proper divisors (4688556118).

9138623402 is a wasteful number, since it uses less digits than its factorization.

9138623402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86197.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 9138623402 is about 95596.1474223726. The cubic root of 9138623402 is about 2090.7090229642.

The spelling of 9138623402 in words is "nine billion, one hundred thirty-eight million, six hundred twenty-three thousand, four hundred two".