1338118550 has 24 divisors (see below), whose sum is σ = 2489889000. Its totient is φ = 535034880.

The previous prime is 1338118547. The next prime is 1338118651. The reversal of 1338118550 is 558118331.

It is a super-2 number, since 2×1338118550² = 3581122507708205000, 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 1338118550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201686 + ... + 208214.

It is an arithmetic number, because the mean of its divisors is an integer number (103745375).

Almost surely, 2^1338118550 is an apocalyptic number.

1338118550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1338118550 is a deficient number, since it is larger than the sum of its proper divisors (1151770450).

1338118550 is a wasteful number, since it uses less digits than its factorization.

1338118550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10640 (or 10635 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 1338118550 is about 36580.3027598187. The cubic root of 1338118550 is about 1101.9575473626.

The spelling of 1338118550 in words is "one billion, three hundred thirty-eight million, one hundred eighteen thousand, five hundred fifty".