1790881 has 4 divisors (see below), whose sum is σ = 1802032. Its totient is φ = 1779732.

The previous prime is 1790879. The next prime is 1790897. The reversal of 1790881 is 1880971.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1790881 - 2¹ = 1790879 is a prime.

It is a super-2 number, since 2×1790881² = 6414509512322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1790081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5331 + ... + 5656.

It is an arithmetic number, because the mean of its divisors is an integer number (450508).

2^1790881 is an apocalyptic number.

It is an amenable number.

1790881 is a deficient number, since it is larger than the sum of its proper divisors (11151).

1790881 is a wasteful number, since it uses less digits than its factorization.

1790881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11150.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 1790881 is about 1338.2380206824. The cubic root of 1790881 is about 121.4382712963.

The spelling of 1790881 in words is "one million, seven hundred ninety thousand, eight hundred eighty-one".