1491313013 has 8 divisors (see below), whose sum is σ = 1504362240. Its totient is φ = 1478309040.

The previous prime is 1491313003. The next prime is 1491313037. The reversal of 1491313013 is 3103131941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1491313013 - 2⁴ = 1491312997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491313003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56648 + ... + 78686.

It is an arithmetic number, because the mean of its divisors is an integer number (188045280).

Almost surely, 2^1491313013 is an apocalyptic number.

It is an amenable number.

1491313013 is a deficient number, since it is larger than the sum of its proper divisors (13049227).

1491313013 is a wasteful number, since it uses less digits than its factorization.

1491313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22627.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1491313013 is about 38617.5220981357. The cubic root of 1491313013 is about 1142.5001589346.

Adding to 1491313013 its reverse (3103131941), we get a palindrome (4594444954).

The spelling of 1491313013 in words is "one billion, four hundred ninety-one million, three hundred thirteen thousand, thirteen".