2985906640 has 40 divisors (see below), whose sum is σ = 6944868000. Its totient is φ = 1193909376.

The previous prime is 2985906619. The next prime is 2985906641. The reversal of 2985906640 is 466095892.

2985906640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2985906641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274587 + ... + 285253.

It is an arithmetic number, because the mean of its divisors is an integer number (173621700).

Almost surely, 2^2985906640 is an apocalyptic number.

2985906640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2985906640 is an abundant number, since it is smaller than the sum of its proper divisors (3958961360).

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

2985906640 is a wasteful number, since it uses less digits than its factorization.

2985906640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14179 (or 14173 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 2985906640 is about 54643.4501106949. The cubic root of 2985906640 is about 1439.9875641930.

The spelling of 2985906640 in words is "two billion, nine hundred eighty-five million, nine hundred six thousand, six hundred forty".