1338913020 has 24 divisors (see below), whose sum is σ = 3748956624. Its totient is φ = 357043456.

The previous prime is 1338913001. The next prime is 1338913021. The reversal of 1338913020 is 203198331.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338913021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11157549 + ... + 11157668.

It is an arithmetic number, because the mean of its divisors is an integer number (156206526).

Almost surely, 2^1338913020 is an apocalyptic number.

1338913020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338913020 is an abundant number, since it is smaller than the sum of its proper divisors (2410043604).

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

1338913020 is a wasteful number, since it uses less digits than its factorization.

1338913020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22315229 (or 22315227 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1338913020 is about 36591.1604079455. The cubic root of 1338913020 is about 1102.1755895800.

The spelling of 1338913020 in words is "one billion, three hundred thirty-eight million, nine hundred thirteen thousand, twenty".