748979638 has 16 divisors (see below), whose sum is σ = 1226644560. Its totient is φ = 340156000.

The previous prime is 748979603. The next prime is 748979653. The reversal of 748979638 is 836979847.

It is a super-2 number, since 2×748979638² = 1121940996277222088, which contains 22 as substring.

It is a congruent number.

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, 13188 + ... + 40888.

It is an arithmetic number, because the mean of its divisors is an integer number (76665285).

Almost surely, 2^748979638 is an apocalyptic number.

748979638 is a deficient number, since it is larger than the sum of its proper divisors (477664922).

748979638 is a wasteful number, since it uses less digits than its factorization.

748979638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28943.

The product of its digits is 18289152, while the sum is 61.

The square root of 748979638 is about 27367.4923586360. The cubic root of 748979638 is about 908.1480825780.

The spelling of 748979638 in words is "seven hundred forty-eight million, nine hundred seventy-nine thousand, six hundred thirty-eight".