3144278493 has 10 divisors (see below), whose sum is σ = 4697008734. Its totient is φ = 2096185608.

The previous prime is 3144278491. The next prime is 3144278519. The reversal of 3144278493 is 3948724413.

It can be written as a sum of positive squares in only one way, i.e., 1641708324 + 1502570169 = 40518^2 + 38763^2 .

It is not a de Polignac number, because 3144278493 - 2¹ = 3144278491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3144278491) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19409046 + ... + 19409207.

Almost surely, 2^3144278493 is an apocalyptic number.

It is an amenable number.

3144278493 is a deficient number, since it is larger than the sum of its proper divisors (1552730241).

3144278493 is an equidigital number, since it uses as much as digits as its factorization.

3144278493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38818265 (or 38818256 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 3144278493 is about 56073.8663995983. The cubic root of 3144278493 is about 1465.0091428178.

The spelling of 3144278493 in words is "three billion, one hundred forty-four million, two hundred seventy-eight thousand, four hundred ninety-three".