190751505408 has 132 divisors (see below), whose sum is σ = 568559130048. Its totient is φ = 61532651520.

The previous prime is 190751505383. The next prime is 190751505419. The reversal of 190751505408 is 804505157091.

190751505408 is a `hidden beast` number, since 1 + 9 + 0 + 7 + 51 + 50 + 540 + 8 = 666.

It is a super-2 number, since 2×190751505408² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48141 + ... + 619532.

Almost surely, 2^190751505408 is an apocalyptic number.

190751505408 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 190751505408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284279565024).

190751505408 is an abundant number, since it is smaller than the sum of its proper divisors (377807624640).

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

190751505408 is a wasteful number, since it uses less digits than its factorization.

190751505408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667730 (or 667709 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 45.

The spelling of 190751505408 in words is "one hundred ninety billion, seven hundred fifty-one million, five hundred five thousand, four hundred eight".