2154697632 has 96 divisors (see below), whose sum is σ = 6387716160. Its totient is φ = 706440960.

The previous prime is 2154697609. The next prime is 2154697637. The reversal of 2154697632 is 2367964512.

2154697632 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 6 + 9 + 7 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (2154697637) 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, 32263 + ... + 73145.

It is an arithmetic number, because the mean of its divisors is an integer number (66538710).

Almost surely, 2^2154697632 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 2154697632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193858080).

2154697632 is an abundant number, since it is smaller than the sum of its proper divisors (4233018528).

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

2154697632 is a wasteful number, since it uses less digits than its factorization.

2154697632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40963 (or 40949 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 2154697632 is about 46418.7207061978. The cubic root of 2154697632 is about 1291.6022060670.

The spelling of 2154697632 in words is "two billion, one hundred fifty-four million, six hundred ninety-seven thousand, six hundred thirty-two".