1955878 has 8 divisors (see below), whose sum is σ = 2941920. Its totient is φ = 975240.

The previous prime is 1955873. The next prime is 1955887. The reversal of 1955878 is 8785591.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955873) 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, 273 + ... + 1996.

It is an arithmetic number, because the mean of its divisors is an integer number (367740).

2^1955878 is an apocalyptic number.

1955878 is a deficient number, since it is larger than the sum of its proper divisors (986042).

1955878 is a wasteful number, since it uses less digits than its factorization.

1955878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702.

The product of its digits is 100800, while the sum is 43.

The square root of 1955878 is about 1398.5270823263. The cubic root of 1955878 is about 125.0587030939.

The spelling of 1955878 in words is "one million, nine hundred fifty-five thousand, eight hundred seventy-eight".