374087981 has 4 divisors (see below), whose sum is σ = 374146812. Its totient is φ = 374029152.

The previous prime is 374087971. The next prime is 374087999. The reversal of 374087981 is 189780473.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 236236900 + 137851081 = 15370^2 + 11741^2 .

It is a cyclic number.

It is not a de Polignac number, because 374087981 - 2¹⁰ = 374086957 is a prime.

It is a super-2 number, since 2×374087981² = 279883635057312722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (374087911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18536 + ... + 33041.

It is an arithmetic number, because the mean of its divisors is an integer number (93536703).

Almost surely, 2^374087981 is an apocalyptic number.

It is an amenable number.

374087981 is a deficient number, since it is larger than the sum of its proper divisors (58831).

374087981 is an equidigital number, since it uses as much as digits as its factorization.

374087981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58830.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 374087981 is about 19341.3541666554. The cubic root of 374087981 is about 720.5397065786.

The spelling of 374087981 in words is "three hundred seventy-four million, eighty-seven thousand, nine hundred eighty-one".