1374374891 has 2 divisors, whose sum is σ = 1374374892. Its totient is φ = 1374374890.

The previous prime is 1374374887. The next prime is 1374374917. The reversal of 1374374891 is 1984734731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1374374891 - 2² = 1374374887 is a prime.

It is a super-2 number, since 2×1374374891² = 3777812682022523762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1374374831) 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, 687187445 + 687187446.

It is an arithmetic number, because the mean of its divisors is an integer number (687187446).

Almost surely, 2^1374374891 is an apocalyptic number.

1374374891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1374374891 is an equidigital number, since it uses as much as digits as its factorization.

1374374891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The square root of 1374374891 is about 37072.5625092197. The cubic root of 1374374891 is about 1111.8215070178.

The spelling of 1374374891 in words is "one billion, three hundred seventy-four million, three hundred seventy-four thousand, eight hundred ninety-one".