918739147 has 2 divisors, whose sum is σ = 918739148. Its totient is φ = 918739146.

The previous prime is 918739141. The next prime is 918739181. The reversal of 918739147 is 741937819.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 918739147 - 2¹⁹ = 918214859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 918739147.

It is not a weakly prime, because it can be changed into another prime (918739141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459369573 + 459369574.

It is an arithmetic number, because the mean of its divisors is an integer number (459369574).

Almost surely, 2^918739147 is an apocalyptic number.

918739147 is a deficient number, since it is larger than the sum of its proper divisors (1).

918739147 is an equidigital number, since it uses as much as digits as its factorization.

918739147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 49.

The square root of 918739147 is about 30310.7101038560. The cubic root of 918739147 is about 972.1443145616.

The spelling of 918739147 in words is "nine hundred eighteen million, seven hundred thirty-nine thousand, one hundred forty-seven".