1148499257 has 8 divisors (see below), whose sum is σ = 1177411200. Its totient is φ = 1119630240.

The previous prime is 1148499229. The next prime is 1148499259. The reversal of 1148499257 is 7529948411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1148499257 - 2¹⁰ = 1148498233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148499259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47348 + ... + 67370.

It is an arithmetic number, because the mean of its divisors is an integer number (147176400).

Almost surely, 2^1148499257 is an apocalyptic number.

It is an amenable number.

1148499257 is a deficient number, since it is larger than the sum of its proper divisors (28911943).

1148499257 is a wasteful number, since it uses less digits than its factorization.

1148499257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21463.

The product of its digits is 725760, while the sum is 50.

The square root of 1148499257 is about 33889.5154435704. The cubic root of 1148499257 is about 1047.2336119507.

The spelling of 1148499257 in words is "one billion, one hundred forty-eight million, four hundred ninety-nine thousand, two hundred fifty-seven".