638377482 has 16 divisors (see below), whose sum is σ = 1317940992. Its totient is φ = 205928160.

The previous prime is 638377459. The next prime is 638377483. The reversal of 638377482 is 284773836.

It is not an unprimeable number, because it can be changed into a prime (638377483) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1715883 + ... + 1716254.

It is an arithmetic number, because the mean of its divisors is an integer number (82371312).

Almost surely, 2^638377482 is an apocalyptic number.

638377482 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

638377482 is an abundant number, since it is smaller than the sum of its proper divisors (679563510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

638377482 is a wasteful number, since it uses less digits than its factorization.

638377482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432173.

The product of its digits is 1354752, while the sum is 48.

The square root of 638377482 is about 25266.1331034252. The cubic root of 638377482 is about 861.0450078385.

The spelling of 638377482 in words is "six hundred thirty-eight million, three hundred seventy-seven thousand, four hundred eighty-two".