2154390368 has 72 divisors (see below), whose sum is σ = 4629400776. Its totient is φ = 986419200.

The previous prime is 2154390319. The next prime is 2154390401. The reversal of 2154390368 is 8630934512.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 706928 + ... + 709968.

It is an arithmetic number, because the mean of its divisors is an integer number (64297233).

Almost surely, 2^2154390368 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 2154390368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2314700388).

2154390368 is an abundant number, since it is smaller than the sum of its proper divisors (2475010408).

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

2154390368 is a wasteful number, since it uses less digits than its factorization.

2154390368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208 (or 3187 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 2154390368 is about 46415.4108890571. The cubic root of 2154390368 is about 1291.5408081675.

The spelling of 2154390368 in words is "two billion, one hundred fifty-four million, three hundred ninety thousand, three hundred sixty-eight".