2815400813 has 8 divisors (see below), whose sum is σ = 2970820800. Its totient is φ = 2662731808.

The previous prime is 2815400761. The next prime is 2815400831. The reversal of 2815400813 is 3180045182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2815400813 - 2⁸ = 2815400557 is a prime.

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 2815400813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815400113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685643 + ... + 689736.

It is an arithmetic number, because the mean of its divisors is an integer number (371352600).

Almost surely, 2^2815400813 is an apocalyptic number.

2815400813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2815400813 is a deficient number, since it is larger than the sum of its proper divisors (155419987).

2815400813 is a wasteful number, since it uses less digits than its factorization.

2815400813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375491.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 2815400813 is about 53060.3506678951. The cubic root of 2815400813 is about 1412.0391689373.

Adding to 2815400813 its reverse (3180045182), we get a palindrome (5995445995).

The spelling of 2815400813 in words is "two billion, eight hundred fifteen million, four hundred thousand, eight hundred thirteen".