1729000018806 has 64 divisors (see below), whose sum is σ = 3665854596096. Its totient is φ = 542903212800.

The previous prime is 1729000018793. The next prime is 1729000018807. The reversal of 1729000018806 is 6088100009271.

It is a super-2 number, since 2×1729000018806² (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 (1729000018807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467331 + ... + 1917393.

It is an arithmetic number, because the mean of its divisors is an integer number (57278978064).

Almost surely, 2^{1729000018806} is an apocalyptic number.

1729000018806 is an abundant number, since it is smaller than the sum of its proper divisors (1936854577290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1729000018806 is a wasteful number, since it uses less digits than its factorization.

1729000018806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450277.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 1729000018806 in words is "one trillion, seven hundred twenty-nine billion, eighteen thousand, eight hundred six".