1345811819894 has 8 divisors (see below), whose sum is σ = 2067954747768. Its totient is φ = 656493570640.

The previous prime is 1345811819887. The next prime is 1345811819897. The reversal of 1345811819894 is 4989181185431.

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

It is a super-2 number, since 2×1345811819894² (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 (1345811819897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8206169552 + ... + 8206169715.

It is an arithmetic number, because the mean of its divisors is an integer number (258494343471).

Almost surely, 2^{1345811819894} is an apocalyptic number.

1345811819894 is a deficient number, since it is larger than the sum of its proper divisors (722142927874).

1345811819894 is a wasteful number, since it uses less digits than its factorization.

1345811819894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16412339310.

The product of its digits is 9953280, while the sum is 62.

The spelling of 1345811819894 in words is "one trillion, three hundred forty-five billion, eight hundred eleven million, eight hundred nineteen thousand, eight hundred ninety-four".