1238667768 has 64 divisors (see below), whose sum is σ = 3705424800. Its totient is φ = 381127680.

The previous prime is 1238667763. The next prime is 1238667799. The reversal of 1238667768 is 8677668321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238667763) 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, 217753 + ... + 223368.

Almost surely, 2^1238667768 is an apocalyptic number.

1238667768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1238667768 is an abundant number, since it is smaller than the sum of its proper divisors (2466757032).

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

1238667768 is a wasteful number, since it uses less digits than its factorization.

1238667768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441149 (or 441139 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 1238667768 is about 35194.7122164680. The cubic root of 1238667768 is about 1073.9521841326.

The spelling of 1238667768 in words is "one billion, two hundred thirty-eight million, six hundred sixty-seven thousand, seven hundred sixty-eight".