1881955 has 8 divisors (see below), whose sum is σ = 2336400. Its totient is φ = 1453536.

The previous prime is 1881949. The next prime is 1881961. The reversal of 1881955 is 5591881.

It is an interprime number because it is at equal distance from previous prime (1881949) and next prime (1881961).

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

It is a cyclic number.

It is not a de Polignac number, because 1881955 - 2¹⁵ = 1849187 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6345 + ... + 6634.

It is an arithmetic number, because the mean of its divisors is an integer number (292050).

2^1881955 is an apocalyptic number.

1881955 is a deficient number, since it is larger than the sum of its proper divisors (454445).

1881955 is a wasteful number, since it uses less digits than its factorization.

1881955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13013.

The product of its digits is 14400, while the sum is 37.

The square root of 1881955 is about 1371.8436499835. The cubic root of 1881955 is about 123.4628822983.

The spelling of 1881955 in words is "one million, eight hundred eighty-one thousand, nine hundred fifty-five".