1801129 has 8 divisors (see below), whose sum is σ = 1992672. Its totient is φ = 1614240.

The previous prime is 1801117. The next prime is 1801187. The reversal of 1801129 is 9211081.

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

It is a cyclic number.

It is not a de Polignac number, because 1801129 - 2¹¹ = 1799081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801109) 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, 319 + ... + 1924.

It is an arithmetic number, because the mean of its divisors is an integer number (249084).

2^1801129 is an apocalyptic number.

It is an amenable number.

1801129 is a deficient number, since it is larger than the sum of its proper divisors (191543).

1801129 is a wasteful number, since it uses less digits than its factorization.

1801129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1801129 is about 1342.0614740018. The cubic root of 1801129 is about 121.6694672110.

The spelling of 1801129 in words is "one million, eight hundred one thousand, one hundred twenty-nine".