13958649619 has 2 divisors, whose sum is σ = 13958649620. Its totient is φ = 13958649618.

The previous prime is 13958649577. The next prime is 13958649623. The reversal of 13958649619 is 91694685931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13958649619 - 2¹⁵ = 13958616851 is a prime.

It is a super-2 number, since 2×13958649619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13958649689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6979324809 + 6979324810.

It is an arithmetic number, because the mean of its divisors is an integer number (6979324810).

Almost surely, 2^13958649619 is an apocalyptic number.

13958649619 is a deficient number, since it is larger than the sum of its proper divisors (1).

13958649619 is an equidigital number, since it uses as much as digits as its factorization.

13958649619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12597120, while the sum is 61.

The spelling of 13958649619 in words is "thirteen billion, nine hundred fifty-eight million, six hundred forty-nine thousand, six hundred nineteen".