9918977158 has 8 divisors (see below), whose sum is σ = 14880398328. Its totient is φ = 4958844384.

The previous prime is 9918977153. The next prime is 9918977161. The reversal of 9918977158 is 8517798199.

It is a happy number.

9918977158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×9918977158² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9918977158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9918977153) 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 3 ways as a sum of consecutive naturals, for example, 302616 + ... + 333787.

It is an arithmetic number, because the mean of its divisors is an integer number (1860049791).

Almost surely, 2^9918977158 is an apocalyptic number.

9918977158 is a deficient number, since it is larger than the sum of its proper divisors (4961421170).

9918977158 is a wasteful number, since it uses less digits than its factorization.

9918977158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644198.

The product of its digits is 11430720, while the sum is 64.

The square root of 9918977158 is about 99594.0618611371. The cubic root of 9918977158 is about 2148.6002901736.

The spelling of 9918977158 in words is "nine billion, nine hundred eighteen million, nine hundred seventy-seven thousand, one hundred fifty-eight".