2153851587 has 16 divisors (see below), whose sum is σ = 3200373280. Its totient is φ = 1431634176.

The previous prime is 2153851561. The next prime is 2153851621. The reversal of 2153851587 is 7851583512.

2153851587 is a `hidden beast` number, since 2 + 1 + 53 + 8 + 515 + 87 = 666.

It is not a de Polignac number, because 2153851587 - 2⁷ = 2153851459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153851507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109258 + ... + 127455.

It is an arithmetic number, because the mean of its divisors is an integer number (200023330).

Almost surely, 2^2153851587 is an apocalyptic number.

2153851587 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2153851587 is a deficient number, since it is larger than the sum of its proper divisors (1046521693).

2153851587 is a wasteful number, since it uses less digits than its factorization.

2153851587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237059 (or 237053 counting only the distinct ones).

The product of its digits is 336000, while the sum is 45.

The square root of 2153851587 is about 46409.6066240601. The cubic root of 2153851587 is about 1291.4331341398.

The spelling of 2153851587 in words is "two billion, one hundred fifty-three million, eight hundred fifty-one thousand, five hundred eighty-seven".