385170187870 has 32 divisors (see below), whose sum is σ = 770722686720. Its totient is φ = 137629048320.

The previous prime is 385170187823. The next prime is 385170187873. The reversal of 385170187870 is 78781071583.

It is a super-2 number, since 2×385170187870² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385170187873) 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, 47783835 + ... + 47791894.

It is an arithmetic number, because the mean of its divisors is an integer number (24085083960).

Almost surely, 2^385170187870 is an apocalyptic number.

385170187870 is an abundant number, since it is smaller than the sum of its proper divisors (385552498850).

385170187870 is a wasteful number, since it uses less digits than its factorization.

385170187870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95575780.

The product of its (nonzero) digits is 2634240, while the sum is 55.

The spelling of 385170187870 in words is "three hundred eighty-five billion, one hundred seventy million, one hundred eighty-seven thousand, eight hundred seventy".