1338338988 has 72 divisors (see below), whose sum is σ = 3970835232. Its totient is φ = 372045312.

The previous prime is 1338338977. The next prime is 1338338999. The reversal of 1338338988 is 8898338331.

It is an interprime number because it is at equal distance from previous prime (1338338977) and next prime (1338338999).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62445 + ... + 81092.

Almost surely, 2^1338338988 is an apocalyptic number.

1338338988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1338338988 is an abundant number, since it is smaller than the sum of its proper divisors (2632496244).

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

1338338988 is a wasteful number, since it uses less digits than its factorization.

1338338988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143591 (or 143586 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 1338338988 is about 36583.3157053868. The cubic root of 1338338988 is about 1102.0180552003.

The spelling of 1338338988 in words is "one billion, three hundred thirty-eight million, three hundred thirty-eight thousand, nine hundred eighty-eight".