1358868391 has 16 divisors (see below), whose sum is σ = 1468080640. Its totient is φ = 1253841120.

The previous prime is 1358868347. The next prime is 1358868403. The reversal of 1358868391 is 1938688531.

It is a cyclic number.

It is not a de Polignac number, because 1358868391 - 2¹³ = 1358860199 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 (1358868311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113686 + ... + 125068.

It is an arithmetic number, because the mean of its divisors is an integer number (91755040).

Almost surely, 2^1358868391 is an apocalyptic number.

1358868391 is a deficient number, since it is larger than the sum of its proper divisors (109212249).

1358868391 is a wasteful number, since it uses less digits than its factorization.

1358868391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11566.

The product of its digits is 1244160, while the sum is 52.

The square root of 1358868391 is about 36862.8321076935. The cubic root of 1358868391 is about 1107.6242755368.

The spelling of 1358868391 in words is "one billion, three hundred fifty-eight million, eight hundred sixty-eight thousand, three hundred ninety-one".