1870165220 has 48 divisors (see below), whose sum is σ = 4896436608. Its totient is φ = 582908160.

The previous prime is 1870165181. The next prime is 1870165229. The reversal of 1870165220 is 225610781.

It is not an unprimeable number, because it can be changed into a prime (1870165229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605657 + ... + 608736.

It is an arithmetic number, because the mean of its divisors is an integer number (102009096).

Almost surely, 2^1870165220 is an apocalyptic number.

1870165220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1870165220 is an abundant number, since it is smaller than the sum of its proper divisors (3026271388).

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

1870165220 is a wasteful number, since it uses less digits than its factorization.

1870165220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214420 (or 1214418 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1870165220 is about 43245.4069237416. The cubic root of 1870165220 is about 1232.0452499614.

The spelling of 1870165220 in words is "one billion, eight hundred seventy million, one hundred sixty-five thousand, two hundred twenty".