13730918 has 4 divisors (see below), whose sum is σ = 20596380. Its totient is φ = 6865458.

The previous prime is 13730897. The next prime is 13730929. The reversal of 13730918 is 81903731.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432728 + ... + 3432731.

It is an arithmetic number, because the mean of its divisors is an integer number (5149095).

Almost surely, 2^13730918 is an apocalyptic number.

13730918 is a deficient number, since it is larger than the sum of its proper divisors (6865462).

13730918 is an equidigital number, since it uses as much as digits as its factorization.

13730918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865461.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13730918 is about 3705.5253338764. The cubic root of 13730918 is about 239.4601174577.

The spelling of 13730918 in words is "thirteen million, seven hundred thirty thousand, nine hundred eighteen".