1189005048 has 384 divisors, whose sum is σ = 4254297600. Its totient is φ = 301086720.

The previous prime is 1189005029. The next prime is 1189005061. The reversal of 1189005048 is 8405009811.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12257736 + ... + 12257832.

It is an arithmetic number, because the mean of its divisors is an integer number (11078900).

Almost surely, 2^1189005048 is an apocalyptic number.

1189005048 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 1189005048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2127148800).

1189005048 is an abundant number, since it is smaller than the sum of its proper divisors (3065292552).

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

1189005048 is a wasteful number, since it uses less digits than its factorization.

1189005048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1189005048 is about 34481.9524969222. The cubic root of 1189005048 is about 1059.4030838823.

The spelling of 1189005048 in words is "one billion, one hundred eighty-nine million, five thousand, forty-eight".