1338877500 has 120 divisors (see below), whose sum is σ = 4133839248. Its totient is φ = 336000000.

The previous prime is 1338877489. The next prime is 1338877511. The reversal of 1338877500 is 57788331.

It is an interprime number because it is at equal distance from previous prime (1338877489) and next prime (1338877511).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 122250 + ... + 132750.

Almost surely, 2^1338877500 is an apocalyptic number.

1338877500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1338877500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2066919624).

1338877500 is an abundant number, since it is smaller than the sum of its proper divisors (2794961748).

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

1338877500 is a wasteful number, since it uses less digits than its factorization.

1338877500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10545 (or 10528 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 1338877500 is about 36590.6750416004. The cubic root of 1338877500 is about 1102.1658429615.

The spelling of 1338877500 in words is "one billion, three hundred thirty-eight million, eight hundred seventy-seven thousand, five hundred".