190812765 has 48 divisors (see below), whose sum is σ = 361436544. Its totient is φ = 85388160.

The previous prime is 190812749. The next prime is 190812793. The reversal of 190812765 is 567218091.

It is not a de Polignac number, because 190812765 - 2⁴ = 190812749 is a prime.

It is a super-2 number, since 2×190812765² = 72819022573890450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 47 ways as a sum of consecutive naturals, for example, 19552 + ... + 27638.

It is an arithmetic number, because the mean of its divisors is an integer number (7529928).

Almost surely, 2^190812765 is an apocalyptic number.

190812765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190812765 is a deficient number, since it is larger than the sum of its proper divisors (170623779).

190812765 is a wasteful number, since it uses less digits than its factorization.

190812765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8130 (or 8119 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 190812765 is about 13813.4993756108. The cubic root of 190812765 is about 575.7082790498.

The spelling of 190812765 in words is "one hundred ninety million, eight hundred twelve thousand, seven hundred sixty-five".