14691881 has 2 divisors, whose sum is σ = 14691882. Its totient is φ = 14691880.

The previous prime is 14691877. The next prime is 14691931. The reversal of 14691881 is 18819641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13213225 + 1478656 = 3635^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 14691881 - 2² = 14691877 is a prime.

It is a super-2 number, since 2×14691881² = 431702734636322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14691811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7345940 + 7345941.

It is an arithmetic number, because the mean of its divisors is an integer number (7345941).

Almost surely, 2^14691881 is an apocalyptic number.

It is an amenable number.

14691881 is a deficient number, since it is larger than the sum of its proper divisors (1).

14691881 is an equidigital number, since it uses as much as digits as its factorization.

14691881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 38.

The square root of 14691881 is about 3832.9989564309. The cubic root of 14691881 is about 244.9208740732.

The spelling of 14691881 in words is "fourteen million, six hundred ninety-one thousand, eight hundred eighty-one".