2153745432 has 96 divisors (see below), whose sum is σ = 6010992000. Its totient is φ = 696148992.

The previous prime is 2153745421. The next prime is 2153745449. The reversal of 2153745432 is 2345473512.

2153745432 is a `hidden beast` number, since 2 + 153 + 74 + 5 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 896569 + ... + 898967.

It is an arithmetic number, because the mean of its divisors is an integer number (62614500).

Almost surely, 2^2153745432 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 2153745432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3005496000).

2153745432 is an abundant number, since it is smaller than the sum of its proper divisors (3857246568).

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

2153745432 is a wasteful number, since it uses less digits than its factorization.

2153745432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785 (or 2778 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 2153745432 is about 46408.4629351156. The cubic root of 2153745432 is about 1291.4119172127.

The spelling of 2153745432 in words is "two billion, one hundred fifty-three million, seven hundred forty-five thousand, four hundred thirty-two".