1921950 has 36 divisors (see below), whose sum is σ = 5164848. Its totient is φ = 512400.

The previous prime is 1921937. The next prime is 1921967. The reversal of 1921950 is 591291.

It is a happy number.

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 17 ways as a sum of consecutive naturals, for example, 1686 + ... + 2585.

It is an arithmetic number, because the mean of its divisors is an integer number (143468).

2^1921950 is an apocalyptic number.

1921950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1921950 is an abundant number, since it is smaller than the sum of its proper divisors (3242898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1921950 is a wasteful number, since it uses less digits than its factorization.

1921950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289 (or 4281 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 1921950 is about 1386.3441131263. The cubic root of 1921950 is about 124.3313631082.

The spelling of 1921950 in words is "one million, nine hundred twenty-one thousand, nine hundred fifty".