1951966 has 8 divisors (see below), whose sum is σ = 2938824. Its totient is φ = 972360.

The previous prime is 1951951. The next prime is 1951967. The reversal of 1951966 is 6691591.

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 (1951967) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1080 + ... + 2251.

It is an arithmetic number, because the mean of its divisors is an integer number (367353).

2^1951966 is an apocalyptic number.

1951966 is a deficient number, since it is larger than the sum of its proper divisors (986858).

1951966 is a wasteful number, since it uses less digits than its factorization.

1951966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626.

The product of its digits is 14580, while the sum is 37.

The square root of 1951966 is about 1397.1277679582. The cubic root of 1951966 is about 124.9752697743.

The spelling of 1951966 in words is "one million, nine hundred fifty-one thousand, nine hundred sixty-six".