2130665240 has 64 divisors (see below), whose sum is σ = 5234976000. Its totient is φ = 774023040.

The previous prime is 2130665231. The next prime is 2130665249. The reversal of 2130665240 is 425660312.

It is an interprime number because it is at equal distance from previous prime (2130665231) and next prime (2130665249).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130665249) 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, 640301 + ... + 643619.

It is an arithmetic number, because the mean of its divisors is an integer number (81796500).

Almost surely, 2^2130665240 is an apocalyptic number.

2130665240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130665240 is an abundant number, since it is smaller than the sum of its proper divisors (3104310760).

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

2130665240 is a wasteful number, since it uses less digits than its factorization.

2130665240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800 (or 4796 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2130665240 is about 46159.1295411861. The cubic root of 2130665240 is about 1286.7822856301.

The spelling of 2130665240 in words is "two billion, one hundred thirty million, six hundred sixty-five thousand, two hundred forty".