638952034 has 8 divisors (see below), whose sum is σ = 1095346368. Its totient is φ = 273836580.

The previous prime is 638951917. The next prime is 638952043. The reversal of 638952034 is 430259836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22819702 + ... + 22819729.

It is an arithmetic number, because the mean of its divisors is an integer number (136918296).

Almost surely, 2^638952034 is an apocalyptic number.

638952034 is a deficient number, since it is larger than the sum of its proper divisors (456394334).

638952034 is a wasteful number, since it uses less digits than its factorization.

638952034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45639440.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 638952034 is about 25277.5005489071. The cubic root of 638952034 is about 861.3032493971.

The spelling of 638952034 in words is "six hundred thirty-eight million, nine hundred fifty-two thousand, thirty-four".