1158147900 has 432 divisors, whose sum is σ = 4549708800. Its totient is φ = 239915520.

The previous prime is 1158147827. The next prime is 1158147901. The reversal of 1158147900 is 97418511.

1158147900 is a `hidden beast` number, since 1 + 1 + 581 + 4 + 79 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158147901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6470011 + ... + 6470189.

Almost surely, 2^1158147900 is an apocalyptic number.

1158147900 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 1158147900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274854400).

1158147900 is an abundant number, since it is smaller than the sum of its proper divisors (3391560900).

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

1158147900 is a wasteful number, since it uses less digits than its factorization.

1158147900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 1158147900 is about 34031.5721059136. The cubic root of 1158147900 is about 1050.1580714402.

The spelling of 1158147900 in words is "one billion, one hundred fifty-eight million, one hundred forty-seven thousand, nine hundred".