190999699860 has 48 divisors (see below), whose sum is σ = 534852807552. Its totient is φ = 50928144000.

The previous prime is 190999699843. The next prime is 190999699867. The reversal of 190999699860 is 68996999091.

It is a happy number.

It is a super-2 number, since 2×190999699860² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190999699867) 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, 463545 + ... + 772575.

It is an arithmetic number, because the mean of its divisors is an integer number (11142766824).

Almost surely, 2^190999699860 is an apocalyptic number.

190999699860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190999699860 is an abundant number, since it is smaller than the sum of its proper divisors (343853107692).

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

190999699860 is a wasteful number, since it uses less digits than its factorization.

190999699860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319344 (or 319342 counting only the distinct ones).

The product of its (nonzero) digits is 153055008, while the sum is 75.

The spelling of 190999699860 in words is "one hundred ninety billion, nine hundred ninety-nine million, six hundred ninety-nine thousand, eight hundred sixty".