2149684992 has 216 divisors, whose sum is σ = 7629140064. Its totient is φ = 566894592.

The previous prime is 2149684973. The next prime is 2149685009. The reversal of 2149684992 is 2994869412.

2149684992 is a `hidden beast` number, since 2 + 149 + 6 + 8 + 499 + 2 = 666.

It is a super-2 number, since 2×2149684992² = 9242291129660080128, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204538 + ... + 214790.

Almost surely, 2^2149684992 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 2149684992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3814570032).

2149684992 is an abundant number, since it is smaller than the sum of its proper divisors (5479455072).

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

2149684992 is a wasteful number, since it uses less digits than its factorization.

2149684992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10295 (or 10278 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 2149684992 is about 46364.6955344258. The cubic root of 2149684992 is about 1290.5998436212.

The spelling of 2149684992 in words is "two billion, one hundred forty-nine million, six hundred eighty-four thousand, nine hundred ninety-two".