813641495 has 4 divisors (see below), whose sum is σ = 976369800. Its totient is φ = 650913192.

The previous prime is 813641483. The next prime is 813641513. The reversal of 813641495 is 594146318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 813641495 - 2¹⁸ = 813379351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81364145 + ... + 81364154.

It is an arithmetic number, because the mean of its divisors is an integer number (244092450).

Almost surely, 2^813641495 is an apocalyptic number.

813641495 is a deficient number, since it is larger than the sum of its proper divisors (162728305).

813641495 is a wasteful number, since it uses less digits than its factorization.

813641495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162728304.

The product of its digits is 103680, while the sum is 41.

The square root of 813641495 is about 28524.4017465748. The cubic root of 813641495 is about 933.5645737270.

The spelling of 813641495 in words is "eight hundred thirteen million, six hundred forty-one thousand, four hundred ninety-five".