7819280494 has 4 divisors (see below), whose sum is σ = 11728920744. Its totient is φ = 3909640246.

The previous prime is 7819280489. The next prime is 7819280507. The reversal of 7819280494 is 4940829187.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×7819280494² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1954820122 + ... + 1954820125.

It is an arithmetic number, because the mean of its divisors is an integer number (2932230186).

Almost surely, 2^7819280494 is an apocalyptic number.

7819280494 is a deficient number, since it is larger than the sum of its proper divisors (3909640250).

7819280494 is a wasteful number, since it uses less digits than its factorization.

7819280494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909640249.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 7819280494 is about 88426.6955958437. The cubic root of 7819280494 is about 1984.8251950113.

The spelling of 7819280494 in words is "seven billion, eight hundred nineteen million, two hundred eighty thousand, four hundred ninety-four".