190030655808 has 168 divisors, whose sum is σ = 628213688960. Its totient is φ = 53796234240.

The previous prime is 190030655719. The next prime is 190030655819. The reversal of 190030655808 is 808556030091.

190030655808 is a `hidden beast` number, since 1 + 9 + 0 + 0 + 3 + 0 + 65 + 580 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×190030655808² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223293 + ... + 655683.

Almost surely, 2^190030655808 is an apocalyptic number.

190030655808 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 190030655808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314106844480).

190030655808 is an abundant number, since it is smaller than the sum of its proper divisors (438183033152).

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

190030655808 is a wasteful number, since it uses less digits than its factorization.

190030655808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432525 (or 432512 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

Adding to 190030655808 its reverse (808556030091), we get a palindrome (998586685899).

The spelling of 190030655808 in words is "one hundred ninety billion, thirty million, six hundred fifty-five thousand, eight hundred eight".