1148869872 has 160 divisors (see below), whose sum is σ = 3522393600. Its totient is φ = 357654528.

The previous prime is 1148869867. The next prime is 1148869873. The reversal of 1148869872 is 2789688411.

1148869872 is a `hidden beast` number, since 1 + 1 + 488 + 6 + 98 + 72 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148869873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425904 + ... + 428592.

It is an arithmetic number, because the mean of its divisors is an integer number (22014960).

Almost surely, 2^1148869872 is an apocalyptic number.

1148869872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1148869872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761196800).

1148869872 is an abundant number, since it is smaller than the sum of its proper divisors (2373523728).

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

1148869872 is a wasteful number, since it uses less digits than its factorization.

1148869872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2760 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 1148869872 is about 33894.9829915874. The cubic root of 1148869872 is about 1047.3462455294.

The spelling of 1148869872 in words is "one billion, one hundred forty-eight million, eight hundred sixty-nine thousand, eight hundred seventy-two".