1809629860494 has 16 divisors (see below), whose sum is σ = 3670235210880. Its totient is φ = 594714038520.

The previous prime is 1809629860463. The next prime is 1809629860499. The reversal of 1809629860494 is 4940689269081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1809629860499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2123978284 + ... + 2123979135.

It is an arithmetic number, because the mean of its divisors is an integer number (229389700680).

Almost surely, 2^{1809629860494} is an apocalyptic number.

1809629860494 is an abundant number, since it is smaller than the sum of its proper divisors (1860605350386).

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

1809629860494 is a wasteful number, since it uses less digits than its factorization.

1809629860494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247957495.

The product of its (nonzero) digits is 53747712, while the sum is 66.

The spelling of 1809629860494 in words is "one trillion, eight hundred nine billion, six hundred twenty-nine million, eight hundred sixty thousand, four hundred ninety-four".