1148657149 has 2 divisors, whose sum is σ = 1148657150. Its totient is φ = 1148657148.

The previous prime is 1148657123. The next prime is 1148657197. The reversal of 1148657149 is 9417568411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587820025 + 560837124 = 24245^2 + 23682^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148657149 - 2²⁹ = 611786237 is a prime.

It is a super-3 number, since 3×1148657149³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1148657099 and 1148657108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1148657249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574328574 + 574328575.

It is an arithmetic number, because the mean of its divisors is an integer number (574328575).

Almost surely, 2^1148657149 is an apocalyptic number.

It is an amenable number.

1148657149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148657149 is an equidigital number, since it uses as much as digits as its factorization.

1148657149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 46.

The square root of 1148657149 is about 33891.8448745417. The cubic root of 1148657149 is about 1047.2815998595.

It can be divided in two parts, 11486 and 57149, that added together give a triangular number (68635 = T₃₇₀).

The spelling of 1148657149 in words is "one billion, one hundred forty-eight million, six hundred fifty-seven thousand, one hundred forty-nine".