1801244409 has 8 divisors (see below), whose sum is σ = 2414234112. Its totient is φ = 1194542160.

The previous prime is 1801244387. The next prime is 1801244437. The reversal of 1801244409 is 9044421081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1801244409 - 2⁸ = 1801244153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1801244409.

It is not an unprimeable number, because it can be changed into a prime (1801244449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571194 + ... + 1572339.

It is an arithmetic number, because the mean of its divisors is an integer number (301779264).

Almost surely, 2^1801244409 is an apocalyptic number.

It is an amenable number.

1801244409 is a deficient number, since it is larger than the sum of its proper divisors (612989703).

1801244409 is a wasteful number, since it uses less digits than its factorization.

1801244409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143727.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1801244409 is about 42441.0698380708. The cubic root of 1801244409 is about 1216.7206584993.

The spelling of 1801244409 in words is "one billion, eight hundred one million, two hundred forty-four thousand, four hundred nine".