1368801520 has 20 divisors (see below), whose sum is σ = 3182463720. Its totient is φ = 547520576.

The previous prime is 1368801493. The next prime is 1368801541. The reversal of 1368801520 is 251088631.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 8554930 + ... + 8555089.

It is an arithmetic number, because the mean of its divisors is an integer number (159123186).

Almost surely, 2^1368801520 is an apocalyptic number.

1368801520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1368801520 is an abundant number, since it is smaller than the sum of its proper divisors (1813662200).

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

1368801520 is a wasteful number, since it uses less digits than its factorization.

1368801520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17110032 (or 17110026 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1368801520 is about 36997.3177406147. The cubic root of 1368801520 is about 1110.3165831289.

The spelling of 1368801520 in words is "one billion, three hundred sixty-eight million, eight hundred one thousand, five hundred twenty".