1148988649 has 8 divisors (see below), whose sum is σ = 1179999360. Its totient is φ = 1118251536.

The previous prime is 1148988641. The next prime is 1148988689. The reversal of 1148988649 is 9468898411.

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 1148988649 - 2³ = 1148988641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1148988593 and 1148988602.

It is not an unprimeable number, because it can be changed into a prime (1148988641) 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, 59874 + ... + 76699.

It is an arithmetic number, because the mean of its divisors is an integer number (147499920).

Almost surely, 2^1148988649 is an apocalyptic number.

It is an amenable number.

1148988649 is a deficient number, since it is larger than the sum of its proper divisors (31010711).

1148988649 is a wasteful number, since it uses less digits than its factorization.

1148988649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136799.

The product of its digits is 3981312, while the sum is 58.

The square root of 1148988649 is about 33896.7350787653. The cubic root of 1148988649 is about 1047.3823379135.

The spelling of 1148988649 in words is "one billion, one hundred forty-eight million, nine hundred eighty-eight thousand, six hundred forty-nine".