2153838687 has 32 divisors (see below), whose sum is σ = 3855828480. Its totient is φ = 1032808320.

The previous prime is 2153838683. The next prime is 2153838697. The reversal of 2153838687 is 7868383512.

It is not a de Polignac number, because 2153838687 - 2² = 2153838683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153838683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355612 + ... + 361617.

It is an arithmetic number, because the mean of its divisors is an integer number (120494640).

Almost surely, 2^2153838687 is an apocalyptic number.

2153838687 is a deficient number, since it is larger than the sum of its proper divisors (1701989793).

2153838687 is a wasteful number, since it uses less digits than its factorization.

2153838687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717263.

The product of its digits is 1935360, while the sum is 51.

The square root of 2153838687 is about 46409.4676440056. The cubic root of 2153838687 is about 1291.4305558872.

The spelling of 2153838687 in words is "two billion, one hundred fifty-three million, eight hundred thirty-eight thousand, six hundred eighty-seven".