1148987520 has 192 divisors, whose sum is σ = 4060742400. Its totient is φ = 299206656.

The previous prime is 1148987519. The next prime is 1148987527. The reversal of 1148987520 is 257898411.

1148987520 is a `hidden beast` number, since 1 + 1 + 48 + 9 + 87 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×1148987520² = 2640344642231500800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1148987527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245361 + ... + 249999.

It is an arithmetic number, because the mean of its divisors is an integer number (21149700).

Almost surely, 2^1148987520 is an apocalyptic number.

1148987520 is a gapful number since it is divisible by the number (10) 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 1148987520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2030371200).

1148987520 is an abundant number, since it is smaller than the sum of its proper divisors (2911754880).

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

1148987520 is a wasteful number, since it uses less digits than its factorization.

1148987520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4707 (or 4692 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1148987520 is about 33896.7184252399. The cubic root of 1148987520 is about 1047.3819948597.

The spelling of 1148987520 in words is "one billion, one hundred forty-eight million, nine hundred eighty-seven thousand, five hundred twenty".