14961923381 has 2 divisors, whose sum is σ = 14961923382. Its totient is φ = 14961923380.

The previous prime is 14961923309. The next prime is 14961923393. The reversal of 14961923381 is 18332916941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11648884900 + 3313038481 = 107930^2 + 57559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14961923381 is a prime.

It is a super-2 number, since 2×14961923381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14961923881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7480961690 + 7480961691.

It is an arithmetic number, because the mean of its divisors is an integer number (7480961691).

Almost surely, 2^14961923381 is an apocalyptic number.

It is an amenable number.

14961923381 is a deficient number, since it is larger than the sum of its proper divisors (1).

14961923381 is an equidigital number, since it uses as much as digits as its factorization.

14961923381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The spelling of 14961923381 in words is "fourteen billion, nine hundred sixty-one million, nine hundred twenty-three thousand, three hundred eighty-one".