2164263240 has 64 divisors (see below), whose sum is σ = 6503535360. Its totient is φ = 576181760.

The previous prime is 2164263239. The next prime is 2164263253. The reversal of 2164263240 is 423624612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2164263198 and 2164263207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59425 + ... + 88655.

It is an arithmetic number, because the mean of its divisors is an integer number (101617740).

Almost surely, 2^2164263240 is an apocalyptic number.

2164263240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164263240 is an abundant number, since it is smaller than the sum of its proper divisors (4339272120).

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

2164263240 is a wasteful number, since it uses less digits than its factorization.

2164263240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29862 (or 29858 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2164263240 is about 46521.6427053044. The cubic root of 2164263240 is about 1293.5107062386.

Adding to 2164263240 its reverse (423624612), we get a palindrome (2587887852).

The spelling of 2164263240 in words is "two billion, one hundred sixty-four million, two hundred sixty-three thousand, two hundred forty".