148818997 has 2 divisors, whose sum is σ = 148818998. Its totient is φ = 148818996.

The previous prime is 148818979. The next prime is 148819031. The reversal of 148818997 is 799818841.

Together with previous prime (148818979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133772356 + 15046641 = 11566^2 + 3879^2 .

It is an emirp because it is prime and its reverse (799818841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148818997 - 2¹⁵ = 148786229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148810997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74409498 + 74409499.

It is an arithmetic number, because the mean of its divisors is an integer number (74409499).

Almost surely, 2^148818997 is an apocalyptic number.

It is an amenable number.

148818997 is a deficient number, since it is larger than the sum of its proper divisors (1).

148818997 is an equidigital number, since it uses as much as digits as its factorization.

148818997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 55.

The square root of 148818997 is about 12199.1391909429. The cubic root of 148818997 is about 529.9311611079.

The spelling of 148818997 in words is "one hundred forty-eight million, eight hundred eighteen thousand, nine hundred ninety-seven".