374645993 has 2 divisors, whose sum is σ = 374645994. Its totient is φ = 374645992.

The previous prime is 374645939. The next prime is 374646023. The reversal of 374645993 is 399546473.

Together with previous prime (374645939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362064784 + 12581209 = 19028^2 + 3547^2 .

It is a cyclic number.

It is not a de Polignac number, because 374645993 - 2²² = 370451689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (374645893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187322996 + 187322997.

It is an arithmetic number, because the mean of its divisors is an integer number (187322997).

Almost surely, 2^374645993 is an apocalyptic number.

It is an amenable number.

374645993 is a deficient number, since it is larger than the sum of its proper divisors (1).

374645993 is an equidigital number, since it uses as much as digits as its factorization.

374645993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 50.

The square root of 374645993 is about 19355.7741513999. The cubic root of 374645993 is about 720.8977952918.

The spelling of 374645993 in words is "three hundred seventy-four million, six hundred forty-five thousand, nine hundred ninety-three".