1368991908 has 48 divisors (see below), whose sum is σ = 3616220160. Its totient is φ = 447718752.

The previous prime is 1368991879. The next prime is 1368991909. The reversal of 1368991908 is 8091998631.

1368991908 is a `hidden beast` number, since 1 + 368 + 99 + 190 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1368991909) 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, 113860 + ... + 125307.

It is an arithmetic number, because the mean of its divisors is an integer number (75337920).

Almost surely, 2^1368991908 is an apocalyptic number.

1368991908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1368991908 is an abundant number, since it is smaller than the sum of its proper divisors (2247228252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1368991908 is a wasteful number, since it uses less digits than its factorization.

1368991908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239233 (or 239225 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The square root of 1368991908 is about 36999.8906484871. The cubic root of 1368991908 is about 1110.3680590978.

The spelling of 1368991908 in words is "one billion, three hundred sixty-eight million, nine hundred ninety-one thousand, nine hundred eight".