2151538110 has 48 divisors (see below), whose sum is σ = 5724102384. Its totient is φ = 560399616.

The previous prime is 2151538091. The next prime is 2151538111. The reversal of 2151538110 is 118351512.

2151538110 is a `hidden beast` number, since 2 + 1 + 515 + 38 + 110 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151538111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274107 + ... + 281846.

It is an arithmetic number, because the mean of its divisors is an integer number (119252133).

Almost surely, 2^2151538110 is an apocalyptic number.

2151538110 is an abundant number, since it is smaller than the sum of its proper divisors (3572564274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151538110 is a wasteful number, since it uses less digits than its factorization.

2151538110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556009 (or 556006 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 2151538110 is about 46384.6753788361. The cubic root of 2151538110 is about 1290.9705873828.

Adding to 2151538110 its reverse (118351512), we get a palindrome (2269889622).

The spelling of 2151538110 in words is "two billion, one hundred fifty-one million, five hundred thirty-eight thousand, one hundred ten".