1368982388 has 12 divisors (see below), whose sum is σ = 2460468612. Its totient is φ = 665991360.

The previous prime is 1368982387. The next prime is 1368982423. The reversal of 1368982388 is 8832898631.

It can be written as a sum of positive squares in 2 ways, for example, as 1317544804 + 51437584 = 36298^2 + 7172^2 .

It is a super-2 number, since 2×1368982388² = 3748225557308365088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368982387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4624793 + ... + 4625088.

It is an arithmetic number, because the mean of its divisors is an integer number (205039051).

Almost surely, 2^1368982388 is an apocalyptic number.

It is an amenable number.

1368982388 is a deficient number, since it is larger than the sum of its proper divisors (1091486224).

1368982388 is a wasteful number, since it uses less digits than its factorization.

1368982388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9249922 (or 9249920 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 56.

The square root of 1368982388 is about 36999.7619992345. The cubic root of 1368982388 is about 1110.3654852505.

The spelling of 1368982388 in words is "one billion, three hundred sixty-eight million, nine hundred eighty-two thousand, three hundred eighty-eight".