1148381448 has 32 divisors (see below), whose sum is σ = 2900556960. Its totient is φ = 378846720.

The previous prime is 1148381447. The next prime is 1148381449. The reversal of 1148381448 is 8441838411.

It is an interprime number because it is at equal distance from previous prime (1148381447) and next prime (1148381449).

It is a super-2 number, since 2×1148381448² = 2637559900221153408, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1148381441) 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, 244318 + ... + 248973.

It is an arithmetic number, because the mean of its divisors is an integer number (90642405).

Almost surely, 2^1148381448 is an apocalyptic number.

It is an amenable number.

1148381448 is an abundant number, since it is smaller than the sum of its proper divisors (1752175512).

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

1148381448 is a wasteful number, since it uses less digits than its factorization.

1148381448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493397 (or 493393 counting only the distinct ones).

The product of its digits is 98304, while the sum is 42.

The square root of 1148381448 is about 33887.7772655570. Note that the first 3 decimals coincide. The cubic root of 1148381448 is about 1047.1978035505.

The spelling of 1148381448 in words is "one billion, one hundred forty-eight million, three hundred eighty-one thousand, four hundred forty-eight".