2920640895 has 80 divisors (see below), whose sum is σ = 5458068000. Its totient is φ = 1492307712.

The previous prime is 2920640887. The next prime is 2920640897. The reversal of 2920640895 is 5980460292.

It is not a de Polignac number, because 2920640895 - 2³ = 2920640887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2920640895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2920640897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1631661 + ... + 1633449.

It is an arithmetic number, because the mean of its divisors is an integer number (68225850).

Almost surely, 2^2920640895 is an apocalyptic number.

2920640895 is a deficient number, since it is larger than the sum of its proper divisors (2537427105).

2920640895 is a wasteful number, since it uses less digits than its factorization.

2920640895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974 (or 1965 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2920640895 is about 54042.9541661075. The cubic root of 2920640895 is about 1429.4184629047.

The spelling of 2920640895 in words is "two billion, nine hundred twenty million, six hundred forty thousand, eight hundred ninety-five".