1973906 has 32 divisors (see below), whose sum is σ = 3483648. Its totient is φ = 829840.

The previous prime is 1973903. The next prime is 1973911. The reversal of 1973906 is 6093791.

It is not an unprimeable number, because it can be changed into a prime (1973903) 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 15 ways as a sum of consecutive naturals, for example, 23741 + ... + 23823.

It is an arithmetic number, because the mean of its divisors is an integer number (108864).

2^1973906 is an apocalyptic number.

1973906 is a deficient number, since it is larger than the sum of its proper divisors (1509742).

1973906 is a wasteful number, since it uses less digits than its factorization.

1973906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1973906 is about 1404.9576506073. The cubic root of 1973906 is about 125.4417649109.

Subtracting 1973906 from its reverse (6093791), we obtain a triangular number (4119885 = T₂₈₇₀).

The spelling of 1973906 in words is "one million, nine hundred seventy-three thousand, nine hundred six".