869858190 has 160 divisors (see below), whose sum is σ = 2548260000. Its totient is φ = 212067072.

The previous prime is 869858167. The next prime is 869858191. The reversal of 869858190 is 91858968.

It is a super-3 number, since 3×869858190³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869858191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 445336 + ... + 447284.

It is an arithmetic number, because the mean of its divisors is an integer number (15926625).

Almost surely, 2^869858190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869858190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274130000).

869858190 is an abundant number, since it is smaller than the sum of its proper divisors (1678401810).

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

869858190 is a wasteful number, since it uses less digits than its factorization.

869858190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016 (or 2007 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The square root of 869858190 is about 29493.3584049019. The cubic root of 869858190 is about 954.5883993295.

The spelling of 869858190 in words is "eight hundred sixty-nine million, eight hundred fifty-eight thousand, one hundred ninety".