1801512273 has 16 divisors (see below), whose sum is σ = 2621843136. Its totient is φ = 1091216640.

The previous prime is 1801512263. The next prime is 1801512301. The reversal of 1801512273 is 3722151081.

It is not a de Polignac number, because 1801512273 - 2⁸ = 1801512017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1801512273.

It is not an unprimeable number, because it can be changed into a prime (1801512233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48861 + ... + 77397.

It is an arithmetic number, because the mean of its divisors is an integer number (163865196).

Almost surely, 2^1801512273 is an apocalyptic number.

It is an amenable number.

1801512273 is a deficient number, since it is larger than the sum of its proper divisors (820330863).

1801512273 is a wasteful number, since it uses less digits than its factorization.

1801512273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30464.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 1801512273 is about 42444.2254376258. The cubic root of 1801512273 is about 1216.7809685654.

The spelling of 1801512273 in words is "one billion, eight hundred one million, five hundred twelve thousand, two hundred seventy-three".