1801147 has 4 divisors (see below), whose sum is σ = 1830736. Its totient is φ = 1771560.

The previous prime is 1801117. The next prime is 1801187. The reversal of 1801147 is 7411081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1801147 - 2¹¹ = 1799099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1801117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14703 + ... + 14824.

It is an arithmetic number, because the mean of its divisors is an integer number (457684).

2^1801147 is an apocalyptic number.

1801147 is a deficient number, since it is larger than the sum of its proper divisors (29589).

1801147 is an equidigital number, since it uses as much as digits as its factorization.

1801147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29588.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 1801147 is about 1342.0681800862. The cubic root of 1801147 is about 121.6698725204.

The spelling of 1801147 in words is "one million, eight hundred one thousand, one hundred forty-seven".