1158997248 has 216 divisors, whose sum is σ = 3583181056. Its totient is φ = 373248000.

The previous prime is 1158997247. The next prime is 1158997349. The reversal of 1158997248 is 8427998511.

It is a happy number.

1158997248 is a `hidden beast` number, since 11 + 589 + 9 + 7 + 2 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

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

It is a junction number, because it is equal to n+sod(n) for n = 1158997194 and 1158997203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158997247) 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, 1928148 + ... + 1928748.

Almost surely, 2^1158997248 is an apocalyptic number.

1158997248 is a gapful number since it is divisible by the number (18) 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 1158997248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791590528).

1158997248 is an abundant number, since it is smaller than the sum of its proper divisors (2424183808).

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

1158997248 is an frugal number, since it uses more digits than its factorization.

1158997248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 637 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 1158997248 is about 34044.0486428979. The cubic root of 1158997248 is about 1050.4147259671.

The spelling of 1158997248 in words is "one billion, one hundred fifty-eight million, nine hundred ninety-seven thousand, two hundred forty-eight".