1880681 has 4 divisors (see below), whose sum is σ = 2051664. Its totient is φ = 1709700.

The previous prime is 1880663. The next prime is 1880689. The reversal of 1880681 is 1860881.

It is a happy number.

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 1880681 - 2¹⁴ = 1864297 is a prime.

It is a super-2 number, since 2×1880681² = 7073922047522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1880689) 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, 85475 + ... + 85496.

It is an arithmetic number, because the mean of its divisors is an integer number (512916).

2^1880681 is an apocalyptic number.

1880681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1880681 is a deficient number, since it is larger than the sum of its proper divisors (170983).

1880681 is a wasteful number, since it uses less digits than its factorization.

1880681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170982.

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 1880681 is about 1371.3792327434. The cubic root of 1880681 is about 123.4350163790.

The spelling of 1880681 in words is "one million, eight hundred eighty thousand, six hundred eighty-one".