7278671493 has 24 divisors (see below), whose sum is σ = 10848755736. Its totient is φ = 4699507200.

The previous prime is 7278671483. The next prime is 7278671501. The reversal of 7278671493 is 3941768727.

7278671493 is a `hidden beast` number, since 7 + 2 + 7 + 86 + 71 + 493 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 249861249 + 7028810244 = 15807^2 + 83838^2 .

It is not a de Polignac number, because 7278671493 - 2¹² = 7278667397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7278671483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21438 + ... + 122543.

It is an arithmetic number, because the mean of its divisors is an integer number (452031489).

Almost surely, 2^7278671493 is an apocalyptic number.

It is an amenable number.

7278671493 is a deficient number, since it is larger than the sum of its proper divisors (3570084243).

7278671493 is a wasteful number, since it uses less digits than its factorization.

7278671493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144165 (or 144162 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 7278671493 is about 85315.1305045008. The cubic root of 7278671493 is about 1937.9863164277.

The spelling of 7278671493 in words is "seven billion, two hundred seventy-eight million, six hundred seventy-one thousand, four hundred ninety-three".