1149855648 has 48 divisors (see below), whose sum is σ = 3038666400. Its totient is φ = 380708096.

The previous prime is 1149855643. The next prime is 1149855649. The reversal of 1149855648 is 8465589411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1149855648² = 2644336022474999808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1149855648.

It is not an unprimeable number, because it can be changed into a prime (1149855643) 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, 25890 + ... + 54497.

It is an arithmetic number, because the mean of its divisors is an integer number (63305550).

Almost surely, 2^1149855648 is an apocalyptic number.

It is an amenable number.

1149855648 is an abundant number, since it is smaller than the sum of its proper divisors (1888810752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1149855648 is a wasteful number, since it uses less digits than its factorization.

1149855648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80549 (or 80541 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 51.

The square root of 1149855648 is about 33909.5214947071. The cubic root of 1149855648 is about 1047.6457147917.

The spelling of 1149855648 in words is "one billion, one hundred forty-nine million, eight hundred fifty-five thousand, six hundred forty-eight".