971374491 has 16 divisors (see below), whose sum is σ = 1485496320. Its totient is φ = 626692680.

The previous prime is 971374423. The next prime is 971374511. The reversal of 971374491 is 194473179.

971374491 is a `hidden beast` number, since 97 + 1 + 3 + 74 + 491 = 666.

It is not a de Polignac number, because 971374491 - 2¹⁷ = 971243419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (971374291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579435 + ... + 581108.

It is an arithmetic number, because the mean of its divisors is an integer number (92843520).

Almost surely, 2^971374491 is an apocalyptic number.

971374491 is a deficient number, since it is larger than the sum of its proper divisors (514121829).

971374491 is a wasteful number, since it uses less digits than its factorization.

971374491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160583 (or 1160577 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 971374491 is about 31166.8813165514. The cubic root of 971374491 is about 990.3656408809.

The spelling of 971374491 in words is "nine hundred seventy-one million, three hundred seventy-four thousand, four hundred ninety-one".