2189291976 has 64 divisors (see below), whose sum is σ = 6156494400. Its totient is φ = 729758160.

The previous prime is 2189291971. The next prime is 2189291987. The reversal of 2189291976 is 6791929812.

2189291976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2189291971) 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, 45070 + ... + 80061.

It is an arithmetic number, because the mean of its divisors is an integer number (96195225).

Almost surely, 2^2189291976 is an apocalyptic number.

It is an amenable number.

2189291976 is an abundant number, since it is smaller than the sum of its proper divisors (3967202424).

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

2189291976 is an equidigital number, since it uses as much as digits as its factorization.

2189291976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125158 (or 125136 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 2189291976 is about 46789.8704422229. The cubic root of 2189291976 is about 1298.4778982309.

The spelling of 2189291976 in words is "two billion, one hundred eighty-nine million, two hundred ninety-one thousand, nine hundred seventy-six".