7165091853 has 6 divisors (see below), whose sum is σ = 10349577134. Its totient is φ = 4776727896.

The previous prime is 7165091851. The next prime is 7165091873. The reversal of 7165091853 is 3581905617.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6387685929 + 777405924 = 79923^2 + 27882^2 .

It is not a de Polignac number, because 7165091853 - 2¹ = 7165091851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7165091799 and 7165091808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7165091851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 398060650 + ... + 398060667.

Almost surely, 2^7165091853 is an apocalyptic number.

It is an amenable number.

7165091853 is a deficient number, since it is larger than the sum of its proper divisors (3184485281).

7165091853 is a wasteful number, since it uses less digits than its factorization.

7165091853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796121323 (or 796121320 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 7165091853 is about 84646.8655828436. The cubic root of 7165091853 is about 1927.8530227950.

The spelling of 7165091853 in words is "seven billion, one hundred sixty-five million, ninety-one thousand, eight hundred fifty-three".