374530991 has 4 divisors (see below), whose sum is σ = 375474792. Its totient is φ = 373587192.

The previous prime is 374530963. The next prime is 374530993. The reversal of 374530991 is 199035473.

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

It is a cyclic number.

It is not a de Polignac number, because 374530991 - 2¹⁸ = 374268847 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 (374530993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471305 + ... + 472098.

It is an arithmetic number, because the mean of its divisors is an integer number (93868698).

Almost surely, 2^374530991 is an apocalyptic number.

374530991 is a deficient number, since it is larger than the sum of its proper divisors (943801).

374530991 is an equidigital number, since it uses as much as digits as its factorization.

374530991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943800.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 374530991 is about 19352.8031819682. The cubic root of 374530991 is about 720.8240250535.

The spelling of 374530991 in words is "three hundred seventy-four million, five hundred thirty thousand, nine hundred ninety-one".