1918972 has 12 divisors (see below), whose sum is σ = 3663576. Its totient is φ = 872240.

The previous prime is 1918967. The next prime is 1918979. The reversal of 1918972 is 2798191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21763 + ... + 21850.

It is an arithmetic number, because the mean of its divisors is an integer number (305298).

2^1918972 is an apocalyptic number.

It is an amenable number.

1918972 is a deficient number, since it is larger than the sum of its proper divisors (1744604).

1918972 is a wasteful number, since it uses less digits than its factorization.

1918972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43628 (or 43626 counting only the distinct ones).

The product of its digits is 9072, while the sum is 37.

The square root of 1918972 is about 1385.2696488410. The cubic root of 1918972 is about 124.2671140905.

The spelling of 1918972 in words is "one million, nine hundred eighteen thousand, nine hundred seventy-two".