185142870 has 192 divisors, whose sum is σ = 562857984. Its totient is φ = 41775360.

The previous prime is 185142827. The next prime is 185142877. The reversal of 185142870 is 78241581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185142877) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1070104 + ... + 1070276.

It is an arithmetic number, because the mean of its divisors is an integer number (2931552).

Almost surely, 2^185142870 is an apocalyptic number.

185142870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 185142870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281428992).

185142870 is an abundant number, since it is smaller than the sum of its proper divisors (377715114).

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

185142870 is a wasteful number, since it uses less digits than its factorization.

185142870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 185142870 is about 13606.7215007878. The cubic root of 185142870 is about 569.9485641491.

The spelling of 185142870 in words is "one hundred eighty-five million, one hundred forty-two thousand, eight hundred seventy".