147789918 has 24 divisors (see below), whose sum is σ = 322007400. Its totient is φ = 48987024.

The previous prime is 147789907. The next prime is 147789919. The reversal of 147789918 is 819987741.

147789918 is a `hidden beast` number, since 1 + 477 + 89 + 91 + 8 = 666.

147789918 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147789919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19713 + ... + 26156.

It is an arithmetic number, because the mean of its divisors is an integer number (13416975).

Almost surely, 2^147789918 is an apocalyptic number.

147789918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

147789918 is an abundant number, since it is smaller than the sum of its proper divisors (174217482).

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

147789918 is a wasteful number, since it uses less digits than its factorization.

147789918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46056 (or 46053 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 147789918 is about 12156.8876773622. The cubic root of 147789918 is about 528.7068485818.

The spelling of 147789918 in words is "one hundred forty-seven million, seven hundred eighty-nine thousand, nine hundred eighteen".