1338011720 has 16 divisors (see below), whose sum is σ = 3010526460. Its totient is φ = 535204672.

The previous prime is 1338011687. The next prime is 1338011737. The reversal of 1338011720 is 271108331.

It can be written as a sum of positive squares in 2 ways, for example, as 1222621156 + 115390564 = 34966^2 + 10742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1338011720.

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, 16725107 + ... + 16725186.

Almost surely, 2^1338011720 is an apocalyptic number.

1338011720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338011720 is an abundant number, since it is smaller than the sum of its proper divisors (1672514740).

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

1338011720 is a wasteful number, since it uses less digits than its factorization.

1338011720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33450304 (or 33450300 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1338011720 is about 36578.8425185926. The cubic root of 1338011720 is about 1101.9282212968.

The spelling of 1338011720 in words is "one billion, three hundred thirty-eight million, eleven thousand, seven hundred twenty".