1148815481 has 8 divisors (see below), whose sum is σ = 1257261024. Its totient is φ = 1041037920.

The previous prime is 1148815403. The next prime is 1148815489. The reversal of 1148815481 is 1845188411.

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 1148815481 - 2¹⁴ = 1148799097 is a prime.

It is a super-2 number, since 2×1148815481² = 2639554018770522722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1148815489) 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, 163391 + ... + 170276.

It is an arithmetic number, because the mean of its divisors is an integer number (157157628).

Almost surely, 2^1148815481 is an apocalyptic number.

1148815481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1148815481 is a deficient number, since it is larger than the sum of its proper divisors (108445543).

1148815481 is a wasteful number, since it uses less digits than its factorization.

1148815481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333991.

The product of its digits is 40960, while the sum is 41.

The square root of 1148815481 is about 33894.1806362095. The cubic root of 1148815481 is about 1047.3297170812.

The spelling of 1148815481 in words is "one billion, one hundred forty-eight million, eight hundred fifteen thousand, four hundred eighty-one".