1368349557 has 8 divisors (see below), whose sum is σ = 1903790784. Its totient is φ = 872570688.

The previous prime is 1368349547. The next prime is 1368349573. The reversal of 1368349557 is 7559438631.

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

It is not a de Polignac number, because 1368349557 - 2¹⁰ = 1368348533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368349547) 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, 9915508 + ... + 9915645.

It is an arithmetic number, because the mean of its divisors is an integer number (237973848).

Almost surely, 2^1368349557 is an apocalyptic number.

It is an amenable number.

1368349557 is a deficient number, since it is larger than the sum of its proper divisors (535441227).

1368349557 is a wasteful number, since it uses less digits than its factorization.

1368349557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19831179.

The product of its digits is 2721600, while the sum is 51.

The square root of 1368349557 is about 36991.2091854267. The cubic root of 1368349557 is about 1110.1943649576.

The spelling of 1368349557 in words is "one billion, three hundred sixty-eight million, three hundred forty-nine thousand, five hundred fifty-seven".