2154436416 has 84 divisors (see below), whose sum is σ = 6736713984. Its totient is φ = 652857600.

The previous prime is 2154436411. The next prime is 2154436447. The reversal of 2154436416 is 6146344512.

2154436416 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 4 + 3 + 641 + 6 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154436411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163680 + ... + 176351.

It is an arithmetic number, because the mean of its divisors is an integer number (80198976).

Almost surely, 2^2154436416 is an apocalyptic number.

It is an amenable number.

2154436416 is an abundant number, since it is smaller than the sum of its proper divisors (4582277568).

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

2154436416 is a wasteful number, since it uses less digits than its factorization.

2154436416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340060 (or 340047 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 2154436416 is about 46415.9069285520. The cubic root of 2154436416 is about 1291.5500099117.

The spelling of 2154436416 in words is "two billion, one hundred fifty-four million, four hundred thirty-six thousand, four hundred sixteen".