2128187902 has 8 divisors (see below), whose sum is σ = 3270142512. Its totient is φ = 1038140400.

The previous prime is 2128187849. The next prime is 2128187903. The reversal of 2128187902 is 2097818212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128187903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12976674 + ... + 12976837.

It is an arithmetic number, because the mean of its divisors is an integer number (408767814).

Almost surely, 2^2128187902 is an apocalyptic number.

2128187902 is a deficient number, since it is larger than the sum of its proper divisors (1141954610).

2128187902 is a wasteful number, since it uses less digits than its factorization.

2128187902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25953554.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 2128187902 is about 46132.2869799450. The cubic root of 2128187902 is about 1286.2833755742.

The spelling of 2128187902 in words is "two billion, one hundred twenty-eight million, one hundred eighty-seven thousand, nine hundred two".