1916039369 has 2 divisors, whose sum is σ = 1916039370. Its totient is φ = 1916039368.

The previous prime is 1916039327. The next prime is 1916039371. The reversal of 1916039369 is 9639306191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1723246144 + 192793225 = 41512^2 + 13885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916039369 - 2⁸ = 1916039113 is a prime.

It is a super-2 number, since 2×1916039369² = 7342413727115836322, which contains 22 as substring.

Together with 1916039371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1916039399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958019684 + 958019685.

It is an arithmetic number, because the mean of its divisors is an integer number (958019685).

Almost surely, 2^1916039369 is an apocalyptic number.

It is an amenable number.

1916039369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916039369 is an equidigital number, since it uses as much as digits as its factorization.

1916039369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 1916039369 is about 43772.5869580494. The cubic root of 1916039369 is about 1242.0377889624.

The spelling of 1916039369 in words is "one billion, nine hundred sixteen million, thirty-nine thousand, three hundred sixty-nine".