2169132987 has 16 divisors (see below), whose sum is σ = 3306904832. Its totient is φ = 1238919840.

The previous prime is 2169132913. The next prime is 2169132991. The reversal of 2169132987 is 7892319612.

2169132987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2169132987 - 2⁷ = 2169132859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2169132907) 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, 23388 + ... + 69894.

It is an arithmetic number, because the mean of its divisors is an integer number (206681552).

Almost surely, 2^2169132987 is an apocalyptic number.

2169132987 is a deficient number, since it is larger than the sum of its proper divisors (1137771845).

2169132987 is a wasteful number, since it uses less digits than its factorization.

2169132987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48738.

The product of its digits is 326592, while the sum is 48.

The square root of 2169132987 is about 46573.9518078507. The cubic root of 2169132987 is about 1294.4801433522.

The spelling of 2169132987 in words is "two billion, one hundred sixty-nine million, one hundred thirty-two thousand, nine hundred eighty-seven".