638070160 has 240 divisors, whose sum is σ = 1959249600. Its totient is φ = 191020032.

The previous prime is 638070133. The next prime is 638070203. The reversal of 638070160 is 61070836.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 967911 + ... + 968569.

It is an arithmetic number, because the mean of its divisors is an integer number (8163540).

Almost surely, 2^638070160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 638070160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979624800).

638070160 is an abundant number, since it is smaller than the sum of its proper divisors (1321179440).

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

638070160 is a wasteful number, since it uses less digits than its factorization.

638070160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 638070160 is about 25260.0506729500. The cubic root of 638070160 is about 860.9068134545.

The spelling of 638070160 in words is "six hundred thirty-eight million, seventy thousand, one hundred sixty".