1800536542 has 16 divisors (see below), whose sum is σ = 3096378720. Its totient is φ = 769222368.

The previous prime is 1800536519. The next prime is 1800536593. The reversal of 1800536542 is 2456350081.

It is a junction number, because it is equal to n+sod(n) for n = 1800536498 and 1800536507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198417 + ... + 207292.

It is an arithmetic number, because the mean of its divisors is an integer number (193523670).

Almost surely, 2^1800536542 is an apocalyptic number.

1800536542 is a deficient number, since it is larger than the sum of its proper divisors (1295842178).

1800536542 is a wasteful number, since it uses less digits than its factorization.

1800536542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406035.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1800536542 is about 42432.7296081692. The cubic root of 1800536542 is about 1216.5612521751.

The spelling of 1800536542 in words is "one billion, eight hundred million, five hundred thirty-six thousand, five hundred forty-two".