19918034 has 4 divisors (see below), whose sum is σ = 29877054. Its totient is φ = 9959016.

The previous prime is 19918013. The next prime is 19918039. The reversal of 19918034 is 43081991.

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., 13653025 + 6265009 = 3695^2 + 2503^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19917985 and 19918003.

It is not an unprimeable number, because it can be changed into a prime (19918039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979507 + ... + 4979510.

Almost surely, 2^19918034 is an apocalyptic number.

19918034 is a deficient number, since it is larger than the sum of its proper divisors (9959020).

19918034 is an equidigital number, since it uses as much as digits as its factorization.

19918034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9959019.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 19918034 is about 4462.9624690333. The cubic root of 19918034 is about 271.0704373398.

The spelling of 19918034 in words is "nineteen million, nine hundred eighteen thousand, thirty-four".