1438788908 has 12 divisors (see below), whose sum is σ = 2650400760. Its totient is φ = 681531552.

The previous prime is 1438788899. The next prime is 1438788947. The reversal of 1438788908 is 8098878341.

It is a super-2 number, since 2×1438788908² = 4140227043567664928, which contains 22 as substring.

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, 9465641 + ... + 9465792.

It is an arithmetic number, because the mean of its divisors is an integer number (220866730).

Almost surely, 2^1438788908 is an apocalyptic number.

It is an amenable number.

1438788908 is a deficient number, since it is larger than the sum of its proper divisors (1211611852).

1438788908 is a wasteful number, since it uses less digits than its factorization.

1438788908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18931456 (or 18931454 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 56.

The square root of 1438788908 is about 37931.3710271590. The cubic root of 1438788908 is about 1128.9265677517.

The spelling of 1438788908 in words is "one billion, four hundred thirty-eight million, seven hundred eighty-eight thousand, nine hundred eight".