1993955 has 16 divisors (see below), whose sum is σ = 2553600. Its totient is φ = 1490400.

The previous prime is 1993949. The next prime is 1993963. The reversal of 1993955 is 5593991.

It is not a de Polignac number, because 1993955 - 2⁸ = 1993699 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 13130 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (159600).

2^1993955 is an apocalyptic number.

1993955 is a deficient number, since it is larger than the sum of its proper divisors (559645).

1993955 is a wasteful number, since it uses less digits than its factorization.

1993955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314.

The product of its digits is 54675, while the sum is 41.

The square root of 1993955 is about 1412.0747147371. The cubic root of 1993955 is about 125.8650398395.

The spelling of 1993955 in words is "one million, nine hundred ninety-three thousand, nine hundred fifty-five".