2159923416 has 128 divisors (see below), whose sum is σ = 6375697920. Its totient is φ = 597003264.

The previous prime is 2159923379. The next prime is 2159923429. The reversal of 2159923416 is 6143299512.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 648331 + ... + 651653.

It is an arithmetic number, because the mean of its divisors is an integer number (49810140).

Almost surely, 2^2159923416 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 2159923416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3187848960).

2159923416 is an abundant number, since it is smaller than the sum of its proper divisors (4215774504).

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

2159923416 is a wasteful number, since it uses less digits than its factorization.

2159923416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465 (or 3461 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 2159923416 is about 46474.9762345286. The cubic root of 2159923416 is about 1292.6455365028.

The spelling of 2159923416 in words is "two billion, one hundred fifty-nine million, nine hundred twenty-three thousand, four hundred sixteen".