2139955200 has 504 divisors, whose sum is σ = 8134093968. Its totient is φ = 557383680.

The previous prime is 2139955187. The next prime is 2139955229. The reversal of 2139955200 is 25599312.

It is a happy number.

2139955200 is a `hidden beast` number, since 2 + 13 + 99 + 552 + 0 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 49766379 + ... + 49766421.

Almost surely, 2^2139955200 is an apocalyptic number.

2139955200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139955200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4067046984).

2139955200 is an abundant number, since it is smaller than the sum of its proper divisors (5994138768).

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

2139955200 is an frugal number, since it uses more digits than its factorization.

2139955200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 2139955200 is about 46259.6498041220. The cubic root of 2139955200 is about 1288.6497499697.

The spelling of 2139955200 in words is "two billion, one hundred thirty-nine million, nine hundred fifty-five thousand, two hundred".