955993813 has 4 divisors (see below), whose sum is σ = 956691468. Its totient is φ = 955296160.

The previous prime is 955993799. The next prime is 955993823. The reversal of 955993813 is 318399559.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 318399559 = 5273 ⋅60383.

It can be written as a sum of positive squares in 2 ways, for example, as 642774609 + 313219204 = 25353^2 + 17698^2 .

It is a cyclic number.

It is not a de Polignac number, because 955993813 - 2¹³ = 955985621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (955993823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346768 + ... + 349513.

It is an arithmetic number, because the mean of its divisors is an integer number (239172867).

Almost surely, 2^955993813 is an apocalyptic number.

It is an amenable number.

955993813 is a deficient number, since it is larger than the sum of its proper divisors (697655).

955993813 is a wasteful number, since it uses less digits than its factorization.

955993813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697654.

The product of its digits is 1312200, while the sum is 52.

The square root of 955993813 is about 30919.1496163785. The cubic root of 955993813 is about 985.1106794129.

The spelling of 955993813 in words is "nine hundred fifty-five million, nine hundred ninety-three thousand, eight hundred thirteen".