1374938491 has 2 divisors, whose sum is σ = 1374938492. Its totient is φ = 1374938490.

The previous prime is 1374938479. The next prime is 1374938531. The reversal of 1374938491 is 1948394731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1374938491 - 2⁹ = 1374937979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1374938441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687469245 + 687469246.

It is an arithmetic number, because the mean of its divisors is an integer number (687469246).

Almost surely, 2^1374938491 is an apocalyptic number.

1374938491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1374938491 is an equidigital number, since it uses as much as digits as its factorization.

1374938491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 1374938491 is about 37080.1630390159. The cubic root of 1374938491 is about 1111.9734638506.

The spelling of 1374938491 in words is "one billion, three hundred seventy-four million, nine hundred thirty-eight thousand, four hundred ninety-one".