3972785000 has 40 divisors (see below), whose sum is σ = 9308246970. Its totient is φ = 1589112000.

The previous prime is 3972784999. The next prime is 3972785039. The reversal of 3972785000 is 5872793.

It can be written as a sum of positive squares in 5 ways, for example, as 822657124 + 3150127876 = 28682^2 + 56126^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 392279 + ... + 402278.

Almost surely, 2^3972785000 is an apocalyptic number.

It is an amenable number.

3972785000 is an abundant number, since it is smaller than the sum of its proper divisors (5335461970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3972785000 is an equidigital number, since it uses as much as digits as its factorization.

3972785000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794583 (or 794564 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 3972785000 is about 63030.0325241864. The cubic root of 3972785000 is about 1583.7927629520.

The spelling of 3972785000 in words is "three billion, nine hundred seventy-two million, seven hundred eighty-five thousand".