1374764621 has 2 divisors, whose sum is σ = 1374764622. Its totient is φ = 1374764620.

The previous prime is 1374764609. The next prime is 1374764663. The reversal of 1374764621 is 1264674731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 933302500 + 441462121 = 30550^2 + 21011^2 .

It is a cyclic number.

It is not a de Polignac number, because 1374764621 - 2¹⁴ = 1374748237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1374764021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687382310 + 687382311.

It is an arithmetic number, because the mean of its divisors is an integer number (687382311).

Almost surely, 2^1374764621 is an apocalyptic number.

It is an amenable number.

1374764621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1374764621 is an equidigital number, since it uses as much as digits as its factorization.

1374764621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 1374764621 is about 37077.8184498495. The cubic root of 1374764621 is about 1111.9265897594.

The spelling of 1374764621 in words is "one billion, three hundred seventy-four million, seven hundred sixty-four thousand, six hundred twenty-one".