2329391890 has 32 divisors (see below), whose sum is σ = 4889692800. Its totient is φ = 798647472.

The previous prime is 2329391851. The next prime is 2329391891. The reversal of 2329391890 is 981939232.

2329391890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2329391890.

It is not an unprimeable number, because it can be changed into a prime (2329391891) 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, 336132 + ... + 342991.

It is an arithmetic number, because the mean of its divisors is an integer number (152802900).

Almost surely, 2^2329391890 is an apocalyptic number.

2329391890 is an abundant number, since it is smaller than the sum of its proper divisors (2560300910).

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

2329391890 is an equidigital number, since it uses as much as digits as its factorization.

2329391890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679151 (or 679137 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 2329391890 is about 48263.7740961065. The cubic root of 2329391890 is about 1325.6051613249.

The spelling of 2329391890 in words is "two billion, three hundred twenty-nine million, three hundred ninety-one thousand, eight hundred ninety".