368645138 has 4 divisors (see below), whose sum is σ = 552967710. Its totient is φ = 184322568.

The previous prime is 368645113. The next prime is 368645159. The reversal of 368645138 is 831546863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831546863 = 7 ⋅118792409.

It can be written as a sum of positive squares in only one way, i.e., 266897569 + 101747569 = 16337^2 + 10087^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92161283 + ... + 92161286.

Almost surely, 2^368645138 is an apocalyptic number.

368645138 is a deficient number, since it is larger than the sum of its proper divisors (184322572).

368645138 is a wasteful number, since it uses less digits than its factorization.

368645138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184322571.

The product of its digits is 414720, while the sum is 44.

The square root of 368645138 is about 19200.1338016171. The cubic root of 368645138 is about 717.0280906631.

The spelling of 368645138 in words is "three hundred sixty-eight million, six hundred forty-five thousand, one hundred thirty-eight".