19480618 has 4 divisors (see below), whose sum is σ = 29220930. Its totient is φ = 9740308.

The previous prime is 19480613. The next prime is 19480621. The reversal of 19480618 is 81608491.

It is a happy number.

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., 15705369 + 3775249 = 3963^2 + 1943^2 .

It is not an unprimeable number, because it can be changed into a prime (19480613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4870153 + ... + 4870156.

Almost surely, 2^19480618 is an apocalyptic number.

19480618 is a deficient number, since it is larger than the sum of its proper divisors (9740312).

19480618 is an equidigital number, since it uses as much as digits as its factorization.

19480618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9740311.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 19480618 is about 4413.6853082203. The cubic root of 19480618 is about 269.0714237543.

The spelling of 19480618 in words is "nineteen million, four hundred eighty thousand, six hundred eighteen".