374251991 has 4 divisors (see below), whose sum is σ = 396266832. Its totient is φ = 352237152.

The previous prime is 374251973. The next prime is 374252041. The reversal of 374251991 is 199152473.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-374251991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (374251951) 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, 11007395 + ... + 11007428.

It is an arithmetic number, because the mean of its divisors is an integer number (99066708).

Almost surely, 2^374251991 is an apocalyptic number.

374251991 is a deficient number, since it is larger than the sum of its proper divisors (22014841).

374251991 is a wasteful number, since it uses less digits than its factorization.

374251991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22014840.

The product of its digits is 68040, while the sum is 41.

The square root of 374251991 is about 19345.5935809683. The cubic root of 374251991 is about 720.6449923733.

The spelling of 374251991 in words is "three hundred seventy-four million, two hundred fifty-one thousand, nine hundred ninety-one".