1313780547 has 4 divisors (see below), whose sum is σ = 1751707400. Its totient is φ = 875853696.

The previous prime is 1313780537. The next prime is 1313780563. The reversal of 1313780547 is 7450873131.

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

It is not a de Polignac number, because 1313780547 - 2⁸ = 1313780291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313780537) 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, 218963422 + ... + 218963427.

It is an arithmetic number, because the mean of its divisors is an integer number (437926850).

Almost surely, 2^1313780547 is an apocalyptic number.

1313780547 is a deficient number, since it is larger than the sum of its proper divisors (437926853).

1313780547 is an equidigital number, since it uses as much as digits as its factorization.

1313780547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437926852.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 1313780547 is about 36246.1107844690. The cubic root of 1313780547 is about 1095.2357441594.

The spelling of 1313780547 in words is "one billion, three hundred thirteen million, seven hundred eighty thousand, five hundred forty-seven".