1918474 has 4 divisors (see below), whose sum is σ = 2877714. Its totient is φ = 959236.

The previous prime is 1918471. The next prime is 1918489. The reversal of 1918474 is 4748191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1550025 + 368449 = 1245^2 + 607^2 .

It is not an unprimeable number, because it can be changed into a prime (1918471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479617 + ... + 479620.

2^1918474 is an apocalyptic number.

1918474 is a deficient number, since it is larger than the sum of its proper divisors (959240).

1918474 is an equidigital number, since it uses as much as digits as its factorization.

1918474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959239.

The product of its digits is 8064, while the sum is 34.

The square root of 1918474 is about 1385.0898887798. The cubic root of 1918474 is about 124.2563634773.

The spelling of 1918474 in words is "one million, nine hundred eighteen thousand, four hundred seventy-four".