19140634 has 4 divisors (see below), whose sum is σ = 28710954. Its totient is φ = 9570316.

The previous prime is 19140631. The next prime is 19140643. The reversal of 19140634 is 43604191.

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., 19140625 + 9 = 4375^2 + 3^2 .

It is not an unprimeable number, because it can be changed into a prime (19140631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4785157 + ... + 4785160.

Almost surely, 2^19140634 is an apocalyptic number.

19140634 is a deficient number, since it is larger than the sum of its proper divisors (9570320).

19140634 is an equidigital number, since it uses as much as digits as its factorization.

19140634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570319.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 19140634 is about 4375.0010285713. The cubic root of 19140634 is about 267.4969120673.

The spelling of 19140634 in words is "nineteen million, one hundred forty thousand, six hundred thirty-four".