2164625740 has 48 divisors (see below), whose sum is σ = 4595330880. Its totient is φ = 856432640.

The previous prime is 2164625731. The next prime is 2164625741. The reversal of 2164625740 is 475264612.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2164625740.

It is not an unprimeable number, because it can be changed into a prime (2164625741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2099025 + ... + 2100055.

It is an arithmetic number, because the mean of its divisors is an integer number (95736060).

Almost surely, 2^2164625740 is an apocalyptic number.

2164625740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164625740 is an abundant number, since it is smaller than the sum of its proper divisors (2430705140).

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

2164625740 is a wasteful number, since it uses less digits than its factorization.

2164625740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082 (or 2080 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 2164625740 is about 46525.5385782905. The cubic root of 2164625740 is about 1293.5829204138.

The spelling of 2164625740 in words is "two billion, one hundred sixty-four million, six hundred twenty-five thousand, seven hundred forty".