3720166885 has 4 divisors (see below), whose sum is σ = 4464200268. Its totient is φ = 2976133504.

The previous prime is 3720166871. The next prime is 3720166897. The reversal of 3720166885 is 5886610273.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2726719524 + 993447361 = 52218^2 + 31519^2 .

It is a cyclic number.

It is not a de Polignac number, because 3720166885 - 2⁷ = 3720166757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372016684 + ... + 372016693.

It is an arithmetic number, because the mean of its divisors is an integer number (1116050067).

Almost surely, 2^3720166885 is an apocalyptic number.

It is an amenable number.

3720166885 is a deficient number, since it is larger than the sum of its proper divisors (744033383).

3720166885 is an equidigital number, since it uses as much as digits as its factorization.

3720166885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744033382.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 3720166885 is about 60993.1708062468. The cubic root of 3720166885 is about 1549.4853490824.

The spelling of 3720166885 in words is "three billion, seven hundred twenty million, one hundred sixty-six thousand, eight hundred eighty-five".