768136989 has 8 divisors (see below), whose sum is σ = 1041541920. Its totient is φ = 503411696.

The previous prime is 768136979. The next prime is 768137039. The reversal of 768136989 is 989631867.

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 768136989 - 2⁴ = 768136973 is a prime.

It is a super-2 number, since 2×768136989² = 1180068867739972242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768136939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2169702 + ... + 2170055.

It is an arithmetic number, because the mean of its divisors is an integer number (130192740).

Almost surely, 2^768136989 is an apocalyptic number.

It is an amenable number.

768136989 is a deficient number, since it is larger than the sum of its proper divisors (273404931).

768136989 is a wasteful number, since it uses less digits than its factorization.

768136989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339819.

The product of its digits is 3919104, while the sum is 57.

The square root of 768136989 is about 27715.2843932730. The cubic root of 768136989 is about 915.8258398540.

The spelling of 768136989 in words is "seven hundred sixty-eight million, one hundred thirty-six thousand, nine hundred eighty-nine".