148821653 has 2 divisors, whose sum is σ = 148821654. Its totient is φ = 148821652.

The previous prime is 148821643. The next prime is 148821679. The reversal of 148821653 is 356128841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143448529 + 5373124 = 11977^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 148821653 - 2⁸ = 148821397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148821613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74410826 + 74410827.

It is an arithmetic number, because the mean of its divisors is an integer number (74410827).

Almost surely, 2^148821653 is an apocalyptic number.

It is an amenable number.

148821653 is a deficient number, since it is larger than the sum of its proper divisors (1).

148821653 is an equidigital number, since it uses as much as digits as its factorization.

148821653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 38.

The square root of 148821653 is about 12199.2480505972. The cubic root of 148821653 is about 529.9343136821.

The spelling of 148821653 in words is "one hundred forty-eight million, eight hundred twenty-one thousand, six hundred fifty-three".