374518981 has 4 divisors (see below), whose sum is σ = 379649452. Its totient is φ = 369388512.

The previous prime is 374518973. The next prime is 374518987. The reversal of 374518981 is 189815473.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 189815473 = 239 ⋅794207.

It can be written as a sum of positive squares in 2 ways, for example, as 142444225 + 232074756 = 11935^2 + 15234^2 .

It is a cyclic number.

It is not a de Polignac number, because 374518981 - 2³ = 374518973 is a prime.

It is a super-2 number, since 2×374518981² = 280528934258556722, 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 (374518987) 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, 2565126 + ... + 2565271.

It is an arithmetic number, because the mean of its divisors is an integer number (94912363).

Almost surely, 2^374518981 is an apocalyptic number.

It is an amenable number.

374518981 is a deficient number, since it is larger than the sum of its proper divisors (5130471).

374518981 is an equidigital number, since it uses as much as digits as its factorization.

374518981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130470.

The product of its digits is 241920, while the sum is 46.

The square root of 374518981 is about 19352.4928885144. The cubic root of 374518981 is about 720.8163201378.

The spelling of 374518981 in words is "three hundred seventy-four million, five hundred eighteen thousand, nine hundred eighty-one".