1052765191 has 4 divisors (see below), whose sum is σ = 1052840592. Its totient is φ = 1052689792.

The previous prime is 1052765149. The next prime is 1052765213. The reversal of 1052765191 is 1915672501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1915672501 = 79 ⋅24249019.

It is a cyclic number.

It is not a de Polignac number, because 1052765191 - 2²¹ = 1050668039 is a prime.

It is a super-2 number, since 2×1052765191² = 2216629094762532962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1052765191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052765141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9946 + ... + 46951.

It is an arithmetic number, because the mean of its divisors is an integer number (263210148).

Almost surely, 2^1052765191 is an apocalyptic number.

1052765191 is a deficient number, since it is larger than the sum of its proper divisors (75401).

1052765191 is an equidigital number, since it uses as much as digits as its factorization.

1052765191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75400.

The product of its (nonzero) digits is 18900, while the sum is 37.

The square root of 1052765191 is about 32446.3432608360. The cubic root of 1052765191 is about 1017.2878064880.

The spelling of 1052765191 in words is "one billion, fifty-two million, seven hundred sixty-five thousand, one hundred ninety-one".