2152213987 has 16 divisors (see below), whose sum is σ = 2715616512. Its totient is φ = 1656839520.

The previous prime is 2152213969. The next prime is 2152213993. The reversal of 2152213987 is 7893122512.

It is not a de Polignac number, because 2152213987 - 2²³ = 2143825379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2152213907) 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, 161988 + ... + 174769.

It is an arithmetic number, because the mean of its divisors is an integer number (169726032).

Almost surely, 2^2152213987 is an apocalyptic number.

2152213987 is a deficient number, since it is larger than the sum of its proper divisors (563402525).

2152213987 is a wasteful number, since it uses less digits than its factorization.

2152213987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336858.

The product of its digits is 60480, while the sum is 40.

The square root of 2152213987 is about 46391.9603703055. The cubic root of 2152213987 is about 1291.1057536273.

The spelling of 2152213987 in words is "two billion, one hundred fifty-two million, two hundred thirteen thousand, nine hundred eighty-seven".