274236491 has 2 divisors, whose sum is σ = 274236492. Its totient is φ = 274236490.

The previous prime is 274236461. The next prime is 274236511. The reversal of 274236491 is 194632472.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274236491 is a prime.

It is a Sophie Germain prime.

It is a pancake number, because a pancake can be divided into 274236491 parts by 23419 straight cuts.

It is not a weakly prime, because it can be changed into another prime (274236461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137118245 + 137118246.

It is an arithmetic number, because the mean of its divisors is an integer number (137118246).

Almost surely, 2^274236491 is an apocalyptic number.

274236491 is a deficient number, since it is larger than the sum of its proper divisors (1).

274236491 is an equidigital number, since it uses as much as digits as its factorization.

274236491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 274236491 is about 16560.0872884173. The cubic root of 274236491 is about 649.6933393684.

The spelling of 274236491 in words is "two hundred seventy-four million, two hundred thirty-six thousand, four hundred ninety-one".