761978159 has 2 divisors, whose sum is σ = 761978160. Its totient is φ = 761978158.

The previous prime is 761978149. The next prime is 761978167. The reversal of 761978159 is 951879167.

It is a strong prime.

It is an emirp because it is prime and its reverse (951879167) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 761978159 - 2⁸ = 761977903 is a prime.

It is a super-2 number, since 2×761978159² = 1161221429586058562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 761978159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761978149) 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, 380989079 + 380989080.

It is an arithmetic number, because the mean of its divisors is an integer number (380989080).

Almost surely, 2^761978159 is an apocalyptic number.

761978159 is a deficient number, since it is larger than the sum of its proper divisors (1).

761978159 is an equidigital number, since it uses as much as digits as its factorization.

761978159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 53.

The square root of 761978159 is about 27603.9518728750. The cubic root of 761978159 is about 913.3716083941.

The spelling of 761978159 in words is "seven hundred sixty-one million, nine hundred seventy-eight thousand, one hundred fifty-nine".