1813399468431 has 8 divisors (see below), whose sum is σ = 2418775282560. Its totient is φ = 1208478316632.

The previous prime is 1813399468409. The next prime is 1813399468459. The reversal of 1813399468431 is 1348649933181.

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

It is a de Polignac number, because none of the positive numbers 2^k-1813399468431 is a prime.

It is a super-2 number, since 2×1813399468431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813399468631) 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, 113656275 + ... + 113672228.

It is an arithmetic number, because the mean of its divisors is an integer number (302346910320).

Almost surely, 2^{1813399468431} is an apocalyptic number.

1813399468431 is a deficient number, since it is larger than the sum of its proper divisors (605375814129).

1813399468431 is a wasteful number, since it uses less digits than its factorization.

1813399468431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227331165.

The product of its digits is 13436928, while the sum is 60.

The spelling of 1813399468431 in words is "one trillion, eight hundred thirteen billion, three hundred ninety-nine million, four hundred sixty-eight thousand, four hundred thirty-one".