2136231780 has 96 divisors (see below), whose sum is σ = 6224408064. Its totient is φ = 546983424.

The previous prime is 2136231763. The next prime is 2136231817. The reversal of 2136231780 is 871326312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142314 + ... + 156606.

It is an arithmetic number, because the mean of its divisors is an integer number (64837584).

Almost surely, 2^2136231780 is an apocalyptic number.

2136231780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2136231780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3112204032).

2136231780 is an abundant number, since it is smaller than the sum of its proper divisors (4088176284).

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

2136231780 is a wasteful number, since it uses less digits than its factorization.

2136231780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14405 (or 14403 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2136231780 is about 46219.3874905326. The cubic root of 2136231780 is about 1287.9019197012.

The spelling of 2136231780 in words is "two billion, one hundred thirty-six million, two hundred thirty-one thousand, seven hundred eighty".