1238638080 has 80 divisors (see below), whose sum is σ = 3959795664. Its totient is φ = 330301440.

The previous prime is 1238638069. The next prime is 1238638109. The reversal of 1238638080 is 808368321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72961 + ... + 88320.

Almost surely, 2^1238638080 is an apocalyptic number.

1238638080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1238638080 is an abundant number, since it is smaller than the sum of its proper divisors (2721157584).

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

1238638080 is an equidigital number, since it uses as much as digits as its factorization.

1238638080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161307 (or 161291 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1238638080 is about 35194.2904460368. The cubic root of 1238638080 is about 1073.9436040145.

The spelling of 1238638080 in words is "one billion, two hundred thirty-eight million, six hundred thirty-eight thousand, eighty".