2154043236 has 12 divisors (see below), whose sum is σ = 5026100912. Its totient is φ = 718014408.

The previous prime is 2154043217. The next prime is 2154043249. The reversal of 2154043236 is 6323404512.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 89751790 + ... + 89751813.

Almost surely, 2^2154043236 is an apocalyptic number.

It is an amenable number.

2154043236 is an abundant number, since it is smaller than the sum of its proper divisors (2872057676).

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

2154043236 is a wasteful number, since it uses less digits than its factorization.

2154043236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179503610 (or 179503608 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 2154043236 is about 46411.6713338358. The cubic root of 2154043236 is about 1291.4714367678.

Adding to 2154043236 its reverse (6323404512), we get a palindrome (8477447748).

The spelling of 2154043236 in words is "two billion, one hundred fifty-four million, forty-three thousand, two hundred thirty-six".