1190861568 has 288 divisors, whose sum is σ = 3931838400. Its totient is φ = 353009664.

The previous prime is 1190861561. The next prime is 1190861579. The reversal of 1190861568 is 8651680911.

1190861568 is a `hidden beast` number, since 1 + 1 + 9 + 0 + 86 + 1 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1190861561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2605596 + ... + 2606052.

Almost surely, 2^1190861568 is an apocalyptic number.

1190861568 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 1190861568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965919200).

1190861568 is an abundant number, since it is smaller than the sum of its proper divisors (2740976832).

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

1190861568 is a wasteful number, since it uses less digits than its factorization.

1190861568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 1190861568 is about 34508.8621661161. The cubic root of 1190861568 is about 1059.9541833763.

The spelling of 1190861568 in words is "one billion, one hundred ninety million, eight hundred sixty-one thousand, five hundred sixty-eight".