19430074 has 4 divisors (see below), whose sum is σ = 29145114. Its totient is φ = 9715036.

The previous prime is 19430071. The next prime is 19430083. The reversal of 19430074 is 47003491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47003491 = 71 ⋅662021.

It can be written as a sum of positive squares in only one way, i.e., 13741849 + 5688225 = 3707^2 + 2385^2 .

It is not an unprimeable number, because it can be changed into a prime (19430071) by changing a digit.

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 as a sum of consecutive naturals, namely, 4857517 + ... + 4857520.

Almost surely, 2^19430074 is an apocalyptic number.

19430074 is a deficient number, since it is larger than the sum of its proper divisors (9715040).

19430074 is an equidigital number, since it uses as much as digits as its factorization.

19430074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715039.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 19430074 is about 4407.9557620285. The cubic root of 19430074 is about 268.8385131921.

The spelling of 19430074 in words is "nineteen million, four hundred thirty thousand, seventy-four".