1674245491 has 2 divisors, whose sum is σ = 1674245492. Its totient is φ = 1674245490.

The previous prime is 1674245479. The next prime is 1674245501. The reversal of 1674245491 is 1945424761.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1674245491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1674245411) 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, 837122745 + 837122746.

It is an arithmetic number, because the mean of its divisors is an integer number (837122746).

Almost surely, 2^1674245491 is an apocalyptic number.

1674245491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1674245491 is an equidigital number, since it uses as much as digits as its factorization.

1674245491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 1674245491 is about 40917.5450265531. The cubic root of 1674245491 is about 1187.4255222874.

The spelling of 1674245491 in words is "one billion, six hundred seventy-four million, two hundred forty-five thousand, four hundred ninety-one".