2151835488 has 144 divisors (see below), whose sum is σ = 6891236352. Its totient is φ = 631008000.

The previous prime is 2151835463. The next prime is 2151835489. The reversal of 2151835488 is 8845381512.

2151835488 is a `hidden beast` number, since 2 + 1 + 518 + 3 + 54 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151835489) 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, 87253 + ... + 109163.

It is an arithmetic number, because the mean of its divisors is an integer number (47855808).

Almost surely, 2^2151835488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151835488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3445618176).

2151835488 is an abundant number, since it is smaller than the sum of its proper divisors (4739400864).

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

2151835488 is a wasteful number, since it uses less digits than its factorization.

2151835488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21969 (or 21958 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 2151835488 is about 46387.8808310964. The cubic root of 2151835488 is about 1291.0300624414.

The spelling of 2151835488 in words is "two billion, one hundred fifty-one million, eight hundred thirty-five thousand, four hundred eighty-eight".