2154430532 has 24 divisors (see below), whose sum is σ = 3955210560. Its totient is φ = 1025417120.

The previous prime is 2154430507. The next prime is 2154430559. The reversal of 2154430532 is 2350344512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 2154430495 and 2154430504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122558 + ... + 139029.

It is an arithmetic number, because the mean of its divisors is an integer number (164800440).

Almost surely, 2^2154430532 is an apocalyptic number.

It is an amenable number.

2154430532 is a deficient number, since it is larger than the sum of its proper divisors (1800780028).

2154430532 is a wasteful number, since it uses less digits than its factorization.

2154430532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261691 (or 261689 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 2154430532 is about 46415.8435450655. The cubic root of 2154430532 is about 1291.5488341228.

The spelling of 2154430532 in words is "two billion, one hundred fifty-four million, four hundred thirty thousand, five hundred thirty-two".