1438617632 has 24 divisors (see below), whose sum is σ = 2898148176. Its totient is φ = 702580032.

The previous prime is 1438617629. The next prime is 1438617641. The reversal of 1438617632 is 2367168341.

It is a super-2 number, since 2×1438617632² = 4139241382202574848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1438617632.

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, 521378 + ... + 524129.

It is an arithmetic number, because the mean of its divisors is an integer number (120756174).

Almost surely, 2^1438617632 is an apocalyptic number.

It is an amenable number.

1438617632 is an abundant number, since it is smaller than the sum of its proper divisors (1459530544).

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

1438617632 is a wasteful number, since it uses less digits than its factorization.

1438617632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045560 (or 1045552 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 1438617632 is about 37929.1132509053. The cubic root of 1438617632 is about 1128.8817694960.

The spelling of 1438617632 in words is "one billion, four hundred thirty-eight million, six hundred seventeen thousand, six hundred thirty-two".