190435806768 has 40 divisors (see below), whose sum is σ = 492202122048. Its totient is φ = 63447253312.

The previous prime is 190435806767. The next prime is 190435806773. The reversal of 190435806768 is 867608534091.

It is a super-3 number, since 3×190435806768³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (190435806763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 881346 + ... + 1075937.

Almost surely, 2^190435806768 is an apocalyptic number.

It is an amenable number.

190435806768 is an abundant number, since it is smaller than the sum of its proper divisors (301766315280).

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

190435806768 is a wasteful number, since it uses less digits than its factorization.

190435806768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959321 (or 1959315 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 190435806768 in words is "one hundred ninety billion, four hundred thirty-five million, eight hundred six thousand, seven hundred sixty-eight".