3973166945 has 16 divisors (see below), whose sum is σ = 5204787840. Its totient is φ = 2887603200.

The previous prime is 3973166929. The next prime is 3973166963. The reversal of 3973166945 is 5496613793.

It is not a de Polignac number, because 3973166945 - 2⁴ = 3973166929 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59201 + ... + 107009.

It is an arithmetic number, because the mean of its divisors is an integer number (325299240).

Almost surely, 2^3973166945 is an apocalyptic number.

It is an amenable number.

3973166945 is a deficient number, since it is larger than the sum of its proper divisors (1231620895).

3973166945 is a wasteful number, since it uses less digits than its factorization.

3973166945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49336.

The product of its digits is 3674160, while the sum is 53.

The square root of 3973166945 is about 63033.0623165335. The cubic root of 3973166945 is about 1583.8435167970.

The spelling of 3973166945 in words is "three billion, nine hundred seventy-three million, one hundred sixty-six thousand, nine hundred forty-five".