1881956 has 6 divisors (see below), whose sum is σ = 3293430. Its totient is φ = 940976.

The previous prime is 1881949. The next prime is 1881961. The reversal of 1881956 is 6591881.

It can be written as a sum of positive squares in only one way, i.e., 1779556 + 102400 = 1334^2 + 320^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235241 + ... + 235248.

It is an arithmetic number, because the mean of its divisors is an integer number (548905).

2^1881956 is an apocalyptic number.

It is an amenable number.

1881956 is a deficient number, since it is larger than the sum of its proper divisors (1411474).

1881956 is a wasteful number, since it uses less digits than its factorization.

1881956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470493 (or 470491 counting only the distinct ones).

The product of its digits is 17280, while the sum is 38.

The square root of 1881956 is about 1371.8440144565. The cubic root of 1881956 is about 123.4629041662.

The spelling of 1881956 in words is "one million, eight hundred eighty-one thousand, nine hundred fifty-six".