14635909381 has 2 divisors, whose sum is σ = 14635909382. Its totient is φ = 14635909380.

The previous prime is 14635909373. The next prime is 14635909391. The reversal of 14635909381 is 18390953641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13564329156 + 1071580225 = 116466^2 + 32735^2 .

It is a cyclic number.

It is not a de Polignac number, because 14635909381 - 2³ = 14635909373 is a prime.

It is a super-2 number, since 2×14635909381² (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 (14635909391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7317954690 + 7317954691.

It is an arithmetic number, because the mean of its divisors is an integer number (7317954691).

Almost surely, 2^14635909381 is an apocalyptic number.

It is an amenable number.

14635909381 is a deficient number, since it is larger than the sum of its proper divisors (1).

14635909381 is an equidigital number, since it uses as much as digits as its factorization.

14635909381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 14635909381 in words is "fourteen billion, six hundred thirty-five million, nine hundred nine thousand, three hundred eighty-one".