1975881 has 8 divisors (see below), whose sum is σ = 2641024. Its totient is φ = 1314000.

The previous prime is 1975823. The next prime is 1975901. The reversal of 1975881 is 1885791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1975881 - 2⁶ = 1975817 is a prime.

It is a super-2 number, since 2×1975881² = 7808211452322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1975811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1815 + ... + 2691.

It is an arithmetic number, because the mean of its divisors is an integer number (330128).

2^1975881 is an apocalyptic number.

It is an amenable number.

1975881 is a deficient number, since it is larger than the sum of its proper divisors (665143).

1975881 is an equidigital number, since it uses as much as digits as its factorization.

1975881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

The product of its digits is 20160, while the sum is 39.

The square root of 1975881 is about 1405.6603430417. The cubic root of 1975881 is about 125.4835880614.

The spelling of 1975881 in words is "one million, nine hundred seventy-five thousand, eight hundred eighty-one".