1806197458729 has 8 divisors (see below), whose sum is σ = 1912464615168. Its totient is φ = 1699932552000.

The previous prime is 1806197458727. The next prime is 1806197458733. The reversal of 1806197458729 is 9278547916081.

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 1806197458729 - 2¹ = 1806197458727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1806197458727) 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, 1259104 + ... + 2279854.

It is an arithmetic number, because the mean of its divisors is an integer number (239058076896).

Almost surely, 2^{1806197458729} is an apocalyptic number.

It is an amenable number.

1806197458729 is a deficient number, since it is larger than the sum of its proper divisors (106267156439).

1806197458729 is a wasteful number, since it uses less digits than its factorization.

1806197458729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124855.

The product of its (nonzero) digits is 60963840, while the sum is 67.

The spelling of 1806197458729 in words is "one trillion, eight hundred six billion, one hundred ninety-seven million, four hundred fifty-eight thousand, seven hundred twenty-nine".