2115667919 has 2 divisors, whose sum is σ = 2115667920. Its totient is φ = 2115667918.

The previous prime is 2115667891. The next prime is 2115667933. The reversal of 2115667919 is 9197665112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115667919 is a prime.

It is a super-2 number, since 2×2115667919² = 8952101486971581122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115667979) 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, 1057833959 + 1057833960.

It is an arithmetic number, because the mean of its divisors is an integer number (1057833960).

Almost surely, 2^2115667919 is an apocalyptic number.

2115667919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115667919 is an equidigital number, since it uses as much as digits as its factorization.

2115667919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 47.

The square root of 2115667919 is about 45996.3902822819. The cubic root of 2115667919 is about 1283.7560408314.

The spelling of 2115667919 in words is "two billion, one hundred fifteen million, six hundred sixty-seven thousand, nine hundred nineteen".