14915981 has 8 divisors (see below), whose sum is σ = 15146880. Its totient is φ = 14686848.

The previous prime is 14915977. The next prime is 14915993. The reversal of 14915981 is 18951941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14915981 - 2² = 14915977 is a prime.

It is a super-2 number, since 2×14915981² = 444972978384722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14915941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35390 + ... + 35808.

It is an arithmetic number, because the mean of its divisors is an integer number (1893360).

Almost surely, 2^14915981 is an apocalyptic number.

It is an amenable number.

14915981 is a deficient number, since it is larger than the sum of its proper divisors (230899).

14915981 is an equidigital number, since it uses as much as digits as its factorization.

14915981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883.

The product of its digits is 12960, while the sum is 38.

The square root of 14915981 is about 3862.1213082968. The cubic root of 14915981 is about 246.1598813049.

The spelling of 14915981 in words is "fourteen million, nine hundred fifteen thousand, nine hundred eighty-one".