19480642 has 4 divisors (see below), whose sum is σ = 29220966. Its totient is φ = 9740320.

The previous prime is 19480639. The next prime is 19480649. The reversal of 19480642 is 24608491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24608491 = 1049 ⋅23459.

It can be written as a sum of positive squares in only one way, i.e., 11978521 + 7502121 = 3461^2 + 2739^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19480598 and 19480607.

It is not an unprimeable number, because it can be changed into a prime (19480649) 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, 4870159 + ... + 4870162.

Almost surely, 2^19480642 is an apocalyptic number.

19480642 is a deficient number, since it is larger than the sum of its proper divisors (9740324).

19480642 is an equidigital number, since it uses as much as digits as its factorization.

19480642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9740323.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 19480642 is about 4413.6880270359. The cubic root of 19480642 is about 269.0715342523.

The spelling of 19480642 in words is "nineteen million, four hundred eighty thousand, six hundred forty-two".