1972837 has 4 divisors (see below), whose sum is σ = 1977376. Its totient is φ = 1968300.

The previous prime is 1972829. The next prime is 1972847. The reversal of 1972837 is 7382791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1972837 - 2³ = 1972829 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1972796 and 1972805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972807) 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 3 ways as a sum of consecutive naturals, for example, 1539 + ... + 2512.

It is an arithmetic number, because the mean of its divisors is an integer number (494344).

2^1972837 is an apocalyptic number.

It is an amenable number.

1972837 is a deficient number, since it is larger than the sum of its proper divisors (4539).

1972837 is an equidigital number, since it uses as much as digits as its factorization.

1972837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538.

The product of its digits is 21168, while the sum is 37.

The square root of 1972837 is about 1404.5771605718. The cubic root of 1972837 is about 125.4191158314.

It can be divided in two parts, 1972 and 837, that added together give a square (2809 = 53²).

The spelling of 1972837 in words is "one million, nine hundred seventy-two thousand, eight hundred thirty-seven".