274789919 has 2 divisors, whose sum is σ = 274789920. Its totient is φ = 274789918.

The previous prime is 274789891. The next prime is 274789927. The reversal of 274789919 is 919987472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 274789919 - 2⁸ = 274789663 is a prime.

It is a super-2 number, since 2×274789919² = 151018999168053122, 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 (274789969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137394959 + 137394960.

It is an arithmetic number, because the mean of its divisors is an integer number (137394960).

Almost surely, 2^274789919 is an apocalyptic number.

274789919 is a deficient number, since it is larger than the sum of its proper divisors (1).

274789919 is an equidigital number, since it uses as much as digits as its factorization.

274789919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 56.

The square root of 274789919 is about 16576.7885611176. The cubic root of 274789919 is about 650.1300875727.

The spelling of 274789919 in words is "two hundred seventy-four million, seven hundred eighty-nine thousand, nine hundred nineteen".