191052765 has 12 divisors (see below), whose sum is σ = 331158204. Its totient is φ = 101894784.

The previous prime is 191052739. The next prime is 191052769. The reversal of 191052765 is 567250191.

It can be written as a sum of positive squares in 2 ways, for example, as 57927321 + 133125444 = 7611^2 + 11538^2 .

It is not a de Polignac number, because 191052765 - 2¹³ = 191044573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191052769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2122764 + ... + 2122853.

It is an arithmetic number, because the mean of its divisors is an integer number (27596517).

Almost surely, 2^191052765 is an apocalyptic number.

191052765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

191052765 is a deficient number, since it is larger than the sum of its proper divisors (140105439).

191052765 is a wasteful number, since it uses less digits than its factorization.

191052765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245628 (or 4245625 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 191052765 is about 13822.1837999645. The cubic root of 191052765 is about 575.9495488943.

The spelling of 191052765 in words is "one hundred ninety-one million, fifty-two thousand, seven hundred sixty-five".