16379923949 has 2 divisors, whose sum is σ = 16379923950. Its totient is φ = 16379923948.

The previous prime is 16379923943. The next prime is 16379923969. The reversal of 16379923949 is 94932997361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14523865225 + 1856058724 = 120515^2 + 43082^2 .

It is a cyclic number.

It is not a de Polignac number, because 16379923949 - 2¹⁶ = 16379858413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16379923891 and 16379923900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16379923943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189961974 + 8189961975.

It is an arithmetic number, because the mean of its divisors is an integer number (8189961975).

Almost surely, 2^16379923949 is an apocalyptic number.

It is an amenable number.

16379923949 is a deficient number, since it is larger than the sum of its proper divisors (1).

16379923949 is an equidigital number, since it uses as much as digits as its factorization.

16379923949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19840464, while the sum is 62.

The spelling of 16379923949 in words is "sixteen billion, three hundred seventy-nine million, nine hundred twenty-three thousand, nine hundred forty-nine".