2163737240 has 32 divisors (see below), whose sum is σ = 5563896480. Its totient is φ = 741852672.

The previous prime is 2163737231. The next prime is 2163737249. The reversal of 2163737240 is 427373612.

It is an interprime number because it is at equal distance from previous prime (2163737231) and next prime (2163737249).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2163737240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163737249) 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, 3863537 + ... + 3864096.

It is an arithmetic number, because the mean of its divisors is an integer number (173871765).

Almost surely, 2^2163737240 is an apocalyptic number.

2163737240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2163737240 is an abundant number, since it is smaller than the sum of its proper divisors (3400159240).

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

2163737240 is a wasteful number, since it uses less digits than its factorization.

2163737240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727651 (or 7727647 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 2163737240 is about 46515.9890790253. The cubic root of 2163737240 is about 1293.4059066396.

The spelling of 2163737240 in words is "two billion, one hundred sixty-three million, seven hundred thirty-seven thousand, two hundred forty".