1368991955 has 8 divisors (see below), whose sum is σ = 1643433792. Its totient is φ = 1094764608.

The previous prime is 1368991913. The next prime is 1368991973. The reversal of 1368991955 is 5591998631.

It is a happy number.

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 1368991955 - 2¹⁸ = 1368729811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1368991955.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39227 + ... + 65396.

It is an arithmetic number, because the mean of its divisors is an integer number (205429224).

Almost surely, 2^1368991955 is an apocalyptic number.

1368991955 is a deficient number, since it is larger than the sum of its proper divisors (274441837).

1368991955 is a wasteful number, since it uses less digits than its factorization.

1368991955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107245.

The product of its digits is 2624400, while the sum is 56.

The square root of 1368991955 is about 36999.8912836241. The cubic root of 1368991955 is about 1110.3680718048.

The spelling of 1368991955 in words is "one billion, three hundred sixty-eight million, nine hundred ninety-one thousand, nine hundred fifty-five".