190685036640 has 1152 divisors, whose sum is σ = 766224023040. Its totient is φ = 39611400192.

The previous prime is 190685036623. The next prime is 190685036657. The reversal of 190685036640 is 46630586091.

It is an interprime number because it is at equal distance from previous prime (190685036623) and next prime (190685036657).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 190685036640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1965825072 + ... + 1965825168.

It is an arithmetic number, because the mean of its divisors is an integer number (665125020).

Almost surely, 2^190685036640 is an apocalyptic number.

190685036640 is a gapful number since it is divisible by the number (10) 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 190685036640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383112011520).

190685036640 is an abundant number, since it is smaller than the sum of its proper divisors (575538986400).

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

190685036640 is a wasteful number, since it uses less digits than its factorization.

190685036640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 190685036640 in words is "one hundred ninety billion, six hundred eighty-five million, thirty-six thousand, six hundred forty".