3891480745 has 32 divisors (see below), whose sum is σ = 4996484352. Its totient is φ = 2902977792.

The previous prime is 3891480737. The next prime is 3891480773. The reversal of 3891480745 is 5470841983.

It is a cyclic number.

It is not a de Polignac number, because 3891480745 - 2³ = 3891480737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 991527 + ... + 995443.

It is an arithmetic number, because the mean of its divisors is an integer number (156140136).

Almost surely, 2^3891480745 is an apocalyptic number.

It is an amenable number.

3891480745 is a deficient number, since it is larger than the sum of its proper divisors (1105003607).

3891480745 is a wasteful number, since it uses less digits than its factorization.

3891480745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 3891480745 is about 62381.7340653496. The cubic root of 3891480745 is about 1572.9139420629.

The spelling of 3891480745 in words is "three billion, eight hundred ninety-one million, four hundred eighty thousand, seven hundred forty-five".