971185745 has 8 divisors (see below), whose sum is σ = 1192526016. Its totient is φ = 758879856.

The previous prime is 971185723. The next prime is 971185753. The reversal of 971185745 is 547581179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 971185745 - 2¹² = 971181649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 971185745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2258357 + ... + 2258786.

It is an arithmetic number, because the mean of its divisors is an integer number (149065752).

Almost surely, 2^971185745 is an apocalyptic number.

It is an amenable number.

971185745 is a deficient number, since it is larger than the sum of its proper divisors (221340271).

971185745 is a wasteful number, since it uses less digits than its factorization.

971185745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517191.

The product of its digits is 352800, while the sum is 47.

The square root of 971185745 is about 31163.8531796054. The cubic root of 971185745 is about 990.3014913473.

The spelling of 971185745 in words is "nine hundred seventy-one million, one hundred eighty-five thousand, seven hundred forty-five".