1913018 has 8 divisors (see below), whose sum is σ = 2876148. Its totient is φ = 954304.

The previous prime is 1913017. The next prime is 1913039. The reversal of 1913018 is 8103191.

It can be written as a sum of positive squares in 2 ways, for example, as 1885129 + 27889 = 1373^2 + 167^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1912984 and 1913002.

It is not an unprimeable number, because it can be changed into a prime (1913017) 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, 380 + ... + 1992.

2^1913018 is an apocalyptic number.

1913018 is a deficient number, since it is larger than the sum of its proper divisors (963130).

1913018 is a wasteful number, since it uses less digits than its factorization.

1913018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1913018 is about 1383.1189392095. The cubic root of 1913018 is about 124.1384596277.

The spelling of 1913018 in words is "one million, nine hundred thirteen thousand, eighteen".