813860229682 has 4 divisors (see below), whose sum is σ = 1220790344526. Its totient is φ = 406930114840.

The previous prime is 813860229673. The next prime is 813860229691. The reversal of 813860229682 is 286922068318.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (813860229673) and next prime (813860229691).

It can be written as a sum of positive squares in only one way, i.e., 628324143561 + 185536086121 = 792669^2 + 430739^2 .

It is a super-2 number, since 2×813860229682² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203465057419 + ... + 203465057422.

Almost surely, 2^813860229682 is an apocalyptic number.

813860229682 is a deficient number, since it is larger than the sum of its proper divisors (406930114844).

813860229682 is a wasteful number, since it uses less digits than its factorization.

813860229682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406930114843.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 813860229682 in words is "eight hundred thirteen billion, eight hundred sixty million, two hundred twenty-nine thousand, six hundred eighty-two".