148998649 has 2 divisors, whose sum is σ = 148998650. Its totient is φ = 148998648.

The previous prime is 148998643. The next prime is 148998671. The reversal of 148998649 is 946899841.

It is a happy number.

148998649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109056249 + 39942400 = 10443^2 + 6320^2 .

It is a cyclic number.

It is not a de Polignac number, because 148998649 - 2²¹ = 146901497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 148998593 and 148998602.

It is not a weakly prime, because it can be changed into another prime (148998643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74499324 + 74499325.

It is an arithmetic number, because the mean of its divisors is an integer number (74499325).

Almost surely, 2^148998649 is an apocalyptic number.

It is an amenable number.

148998649 is a deficient number, since it is larger than the sum of its proper divisors (1).

148998649 is an equidigital number, since it uses as much as digits as its factorization.

148998649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 58.

The square root of 148998649 is about 12206.5002764920. The cubic root of 148998649 is about 530.1443169354.

The spelling of 148998649 in words is "one hundred forty-eight million, nine hundred ninety-eight thousand, six hundred forty-nine".