738664918 has 12 divisors (see below), whose sum is σ = 1158267348. Its totient is φ = 353274020.

The previous prime is 738664873. The next prime is 738664939. The reversal of 738664918 is 819466837.

It is a happy number.

It is a super-2 number, since 2×738664918² = 1091251722167893448, which contains 22 as substring.

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 348028 + ... + 350143.

It is an arithmetic number, because the mean of its divisors is an integer number (96522279).

Almost surely, 2^738664918 is an apocalyptic number.

738664918 is a deficient number, since it is larger than the sum of its proper divisors (419602430).

738664918 is a wasteful number, since it uses less digits than its factorization.

738664918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698219 (or 698196 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 738664918 is about 27178.3906440392. The cubic root of 738664918 is about 903.9598839783.

The spelling of 738664918 in words is "seven hundred thirty-eight million, six hundred sixty-four thousand, nine hundred eighteen".