1013813720 has 32 divisors (see below), whose sum is σ = 2282098320. Its totient is φ = 405344640.

The previous prime is 1013813699. The next prime is 1013813729. The reversal of 1013813720 is 273183101.

It is a self number, because there is not a number n which added to its sum of digits gives 1013813720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013813729) 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, 119210 + ... + 127430.

Almost surely, 2^1013813720 is an apocalyptic number.

1013813720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013813720 is an abundant number, since it is smaller than the sum of its proper divisors (1268284600).

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

1013813720 is a wasteful number, since it uses less digits than its factorization.

1013813720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11315 (or 11311 counting only the distinct ones).

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

The square root of 1013813720 is about 31840.4415798525. The cubic root of 1013813720 is about 1004.5835324653.

Adding to 1013813720 its reverse (273183101), we get a palindrome (1286996821).

The spelling of 1013813720 in words is "one billion, thirteen million, eight hundred thirteen thousand, seven hundred twenty".