1374871649 has 2 divisors, whose sum is σ = 1374871650. Its totient is φ = 1374871648.

The previous prime is 1374871543. The next prime is 1374871661. The reversal of 1374871649 is 9461784731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 695904400 + 678967249 = 26380^2 + 26057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1374871649 - 2¹² = 1374867553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1374871597 and 1374871606.

It is not a weakly prime, because it can be changed into another prime (1374871679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687435824 + 687435825.

It is an arithmetic number, because the mean of its divisors is an integer number (687435825).

Almost surely, 2^1374871649 is an apocalyptic number.

It is an amenable number.

1374871649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1374871649 is an equidigital number, since it uses as much as digits as its factorization.

1374871649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 1374871649 is about 37079.2617105573. The cubic root of 1374871649 is about 1111.9554441997.

The spelling of 1374871649 in words is "one billion, three hundred seventy-four million, eight hundred seventy-one thousand, six hundred forty-nine".