190507211928 has 768 divisors, whose sum is σ = 642288890880. Its totient is φ = 52690176000.

The previous prime is 190507211899. The next prime is 190507211933. The reversal of 190507211928 is 829112705091.

190507211928 is a `hidden beast` number, since 1 + 9 + 0 + 507 + 2 + 119 + 28 = 666.

190507211928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 2683200133 + ... + 2683200203.

It is an arithmetic number, because the mean of its divisors is an integer number (836313660).

Almost surely, 2^190507211928 is an apocalyptic number.

190507211928 is a gapful number since it is divisible by the number (18) 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 190507211928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321144445440).

190507211928 is an abundant number, since it is smaller than the sum of its proper divisors (451781678952).

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

190507211928 is a wasteful number, since it uses less digits than its factorization.

190507211928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 190507211928 in words is "one hundred ninety billion, five hundred seven million, two hundred eleven thousand, nine hundred twenty-eight".