1391616199 has 2 divisors, whose sum is σ = 1391616200. Its totient is φ = 1391616198.

The previous prime is 1391616179. The next prime is 1391616203. The reversal of 1391616199 is 9916161931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1391616199 - 2⁵ = 1391616167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1391616169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695808099 + 695808100.

It is an arithmetic number, because the mean of its divisors is an integer number (695808100).

Almost surely, 2^1391616199 is an apocalyptic number.

1391616199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391616199 is an equidigital number, since it uses as much as digits as its factorization.

1391616199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 46.

The square root of 1391616199 is about 37304.3723844806. The cubic root of 1391616199 is about 1116.4514064710.

The spelling of 1391616199 in words is "one billion, three hundred ninety-one million, six hundred sixteen thousand, one hundred ninety-nine".