2158376220 has 600 divisors, whose sum is σ = 9166708320. Its totient is φ = 413994240.

The previous prime is 2158376203. The next prime is 2158376221. The reversal of 2158376220 is 226738512.

2158376220 is a `hidden beast` number, since 2 + 1 + 583 + 76 + 2 + 2 + 0 = 666.

It is a super-2 number, since 2×2158376220² = 9317175814122976800, which contains 22 as substring.

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 (2158376221) by changing a digit.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 166028934 + ... + 166028946.

Almost surely, 2^2158376220 is an apocalyptic number.

2158376220 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 2158376220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4583354160).

2158376220 is an abundant number, since it is smaller than the sum of its proper divisors (7008332100).

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

2158376220 is a wasteful number, since it uses less digits than its factorization.

2158376220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2158376220 is about 46458.3277787740. The cubic root of 2158376220 is about 1292.3368135608.

The spelling of 2158376220 in words is "two billion, one hundred fifty-eight million, three hundred seventy-six thousand, two hundred twenty".