126618889 has 8 divisors (see below), whose sum is σ = 127703520. Its totient is φ = 125538336.

The previous prime is 126618883. The next prime is 126618923. The reversal of 126618889 is 988816621.

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 126618889 - 2⁵ = 126618857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126618883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99942 + ... + 101200.

It is an arithmetic number, because the mean of its divisors is an integer number (15962940).

Almost surely, 2^126618889 is an apocalyptic number.

It is an amenable number.

126618889 is a deficient number, since it is larger than the sum of its proper divisors (1084631).

126618889 is a wasteful number, since it uses less digits than its factorization.

126618889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039.

The product of its digits is 331776, while the sum is 49.

The square root of 126618889 is about 11252.5058986876. The cubic root of 126618889 is about 502.1492667341.

The spelling of 126618889 in words is "one hundred twenty-six million, six hundred eighteen thousand, eight hundred eighty-nine".