1074781313 has 4 divisors (see below), whose sum is σ = 1074850308. Its totient is φ = 1074712320.

The previous prime is 1074781297. The next prime is 1074781319. The reversal of 1074781313 is 3131874701.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3131874701 = 1723 ⋅1817687.

It can be written as a sum of positive squares in 2 ways, for example, as 875745649 + 199035664 = 29593^2 + 14108^2 .

It is a cyclic number.

It is not a de Polignac number, because 1074781313 - 2⁴ = 1074781297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1074781319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145 + ... + 46377.

It is an arithmetic number, because the mean of its divisors is an integer number (268712577).

Almost surely, 2^1074781313 is an apocalyptic number.

It is an amenable number.

1074781313 is a deficient number, since it is larger than the sum of its proper divisors (68995).

1074781313 is an equidigital number, since it uses as much as digits as its factorization.

1074781313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68994.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 1074781313 is about 32783.8575064009. The cubic root of 1074781313 is about 1024.3303380767.

The spelling of 1074781313 in words is "one billion, seventy-four million, seven hundred eighty-one thousand, three hundred thirteen".