147918493 has 2 divisors, whose sum is σ = 147918494. Its totient is φ = 147918492.

The previous prime is 147918461. The next prime is 147918499. The reversal of 147918493 is 394819741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130919364 + 16999129 = 11442^2 + 4123^2 .

It is a cyclic number.

It is not a de Polignac number, because 147918493 - 2⁵ = 147918461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147918499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73959246 + 73959247.

It is an arithmetic number, because the mean of its divisors is an integer number (73959247).

Almost surely, 2^147918493 is an apocalyptic number.

It is an amenable number.

147918493 is a deficient number, since it is larger than the sum of its proper divisors (1).

147918493 is an equidigital number, since it uses as much as digits as its factorization.

147918493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 147918493 is about 12162.1746821857. The cubic root of 147918493 is about 528.8601264691.

The spelling of 147918493 in words is "one hundred forty-seven million, nine hundred eighteen thousand, four hundred ninety-three".