2164701940 has 24 divisors (see below), whose sum is σ = 4573769760. Its totient is φ = 860567328.

The previous prime is 2164701881. The next prime is 2164701943. The reversal of 2164701940 is 491074612.

It is a junction number, because it is equal to n+sod(n) for n = 2164701896 and 2164701905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164701943) 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, 328750 + ... + 335269.

It is an arithmetic number, because the mean of its divisors is an integer number (190573740).

Almost surely, 2^2164701940 is an apocalyptic number.

2164701940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164701940 is an abundant number, since it is smaller than the sum of its proper divisors (2409067820).

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

2164701940 is a wasteful number, since it uses less digits than its factorization.

2164701940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664191 (or 664189 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2164701940 is about 46526.3574761661. The cubic root of 2164701940 is about 1293.5980993059.

The spelling of 2164701940 in words is "two billion, one hundred sixty-four million, seven hundred one thousand, nine hundred forty".