2154432215 has 8 divisors (see below), whose sum is σ = 2784189408. Its totient is φ = 1590965280.

The previous prime is 2154432209. The next prime is 2154432233. The reversal of 2154432215 is 5122344512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2154432215 - 2⁴ = 2154432199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16572491 + ... + 16572620.

It is an arithmetic number, because the mean of its divisors is an integer number (348023676).

Almost surely, 2^2154432215 is an apocalyptic number.

2154432215 is a deficient number, since it is larger than the sum of its proper divisors (629757193).

2154432215 is a wasteful number, since it uses less digits than its factorization.

2154432215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33145129.

The product of its digits is 9600, while the sum is 29.

The square root of 2154432215 is about 46415.8616746474. The cubic root of 2154432215 is about 1291.5491704338.

Adding to 2154432215 its reverse (5122344512), we get a palindrome (7276776727).

The spelling of 2154432215 in words is "two billion, one hundred fifty-four million, four hundred thirty-two thousand, two hundred fifteen".