1944631 has 8 divisors (see below), whose sum is σ = 2204720. Its totient is φ = 1700352.

The previous prime is 1944583. The next prime is 1944659. The reversal of 1944631 is 1364491.

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

It is a 9-Lehmer number, since φ(1944631) divides (1944631-1)⁹.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1944631 is a prime.

It is a super-2 number, since 2×1944631² = 7563179452322, which contains 22 as substring.

It is the 1395-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1944631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944931) by changing a digit.

It is a nontrivial repunit in base 1394.

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, 3690 + ... + 4183.

It is an arithmetic number, because the mean of its divisors is an integer number (275590).

2^1944631 is an apocalyptic number.

1944631 is a deficient number, since it is larger than the sum of its proper divisors (260089).

1944631 is a wasteful number, since it uses less digits than its factorization.

1944631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905.

The product of its digits is 2592, while the sum is 28.

The square root of 1944631 is about 1394.5002689136. The cubic root of 1944631 is about 124.8185313472.

The spelling of 1944631 in words is "one million, nine hundred forty-four thousand, six hundred thirty-one".