1972911 has 8 divisors (see below), whose sum is σ = 2637360. Its totient is φ = 1311872.

The previous prime is 1972891. The next prime is 1972913. The reversal of 1972911 is 1192791.

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

It is a cyclic number.

It is not a de Polignac number, because 1972911 - 2⁶ = 1972847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972913) 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 7 ways as a sum of consecutive naturals, for example, 1225 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (329670).

2^1972911 is an apocalyptic number.

1972911 is a deficient number, since it is larger than the sum of its proper divisors (664449).

1972911 is a wasteful number, since it uses less digits than its factorization.

1972911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705.

The product of its digits is 1134, while the sum is 30.

The square root of 1972911 is about 1404.6035027722. The cubic root of 1972911 is about 125.4206839452.

The spelling of 1972911 in words is "one million, nine hundred seventy-two thousand, nine hundred eleven".