1800491503434 has 32 divisors (see below), whose sum is σ = 3878723076480. Its totient is φ = 553891474752.

The previous prime is 1800491503423. The next prime is 1800491503439. The reversal of 1800491503434 is 4343051940081.

It is not an unprimeable number, because it can be changed into a prime (1800491503439) 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 15 ways as a sum of consecutive naturals, for example, 1795374 + ... + 2612345.

It is an arithmetic number, because the mean of its divisors is an integer number (121210096140).

Almost surely, 2^{1800491503434} is an apocalyptic number.

1800491503434 is an abundant number, since it is smaller than the sum of its proper divisors (2078231573046).

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

1800491503434 is a wasteful number, since it uses less digits than its factorization.

1800491503434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4412974.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 1800491503434 in words is "one trillion, eight hundred billion, four hundred ninety-one million, five hundred three thousand, four hundred thirty-four".