1879881 has 4 divisors (see below), whose sum is σ = 2506512. Its totient is φ = 1253252.

The previous prime is 1879873. The next prime is 1879897. The reversal of 1879881 is 1889781.

1879881 = T₄₄₈ + T₄₄₉ + ... + T₄₆₅.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1889781 = 3 ⋅629927.

It is a cyclic number.

It is not a de Polignac number, because 1879881 - 2³ = 1879873 is a prime.

It is a super-2 number, since 2×1879881² = 7067905148322, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1879811) 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, 313311 + ... + 313316.

It is an arithmetic number, because the mean of its divisors is an integer number (626628).

2^1879881 is an apocalyptic number.

It is an amenable number.

1879881 is a deficient number, since it is larger than the sum of its proper divisors (626631).

1879881 is an equidigital number, since it uses as much as digits as its factorization.

1879881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626630.

The product of its digits is 32256, while the sum is 42.

The square root of 1879881 is about 1371.0875245585. The cubic root of 1879881 is about 123.4175117237.

The spelling of 1879881 in words is "one million, eight hundred seventy-nine thousand, eight hundred eighty-one".