374065781 has 2 divisors, whose sum is σ = 374065782. Its totient is φ = 374065780.

The previous prime is 374065777. The next prime is 374065789. The reversal of 374065781 is 187560473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309408100 + 64657681 = 17590^2 + 8041^2 .

It is a cyclic number.

It is not a de Polignac number, because 374065781 - 2² = 374065777 is a prime.

It is a super-2 number, since 2×374065781² = 279850417030279922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (374065789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187032890 + 187032891.

It is an arithmetic number, because the mean of its divisors is an integer number (187032891).

Almost surely, 2^374065781 is an apocalyptic number.

It is an amenable number.

374065781 is a deficient number, since it is larger than the sum of its proper divisors (1).

374065781 is an equidigital number, since it uses as much as digits as its factorization.

374065781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 374065781 is about 19340.7802583040. The cubic root of 374065781 is about 720.5254529817.

The spelling of 374065781 in words is "three hundred seventy-four million, sixty-five thousand, seven hundred eighty-one".