1890801 has 24 divisors (see below), whose sum is σ = 3032640. Its totient is φ = 1125600.

The previous prime is 1890799. The next prime is 1890809. The reversal of 1890801 is 1080981.

It is not a de Polignac number, because 1890801 - 2¹ = 1890799 is a prime.

1890801 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1890809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6895 + ... + 7163.

It is an arithmetic number, because the mean of its divisors is an integer number (126360).

2^1890801 is an apocalyptic number.

1890801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1890801 is a deficient number, since it is larger than the sum of its proper divisors (1141839).

1890801 is a wasteful number, since it uses less digits than its factorization.

1890801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 1890801 is about 1375.0639985106. The cubic root of 1890801 is about 123.6560229270.

The spelling of 1890801 in words is "one million, eight hundred ninety thousand, eight hundred one".