1199085570 has 96 divisors (see below), whose sum is σ = 3157449984. Its totient is φ = 315705600.

The previous prime is 1199085527. The next prime is 1199085571. The reversal of 1199085570 is 755809911.

1199085570 is a `hidden beast` number, since 1 + 1 + 9 + 90 + 8 + 557 + 0 = 666.

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 (1199085571) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4424535 + ... + 4424805.

It is an arithmetic number, because the mean of its divisors is an integer number (32890104).

Almost surely, 2^1199085570 is an apocalyptic number.

1199085570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199085570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578724992).

1199085570 is an abundant number, since it is smaller than the sum of its proper divisors (1958364414).

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

1199085570 is a wasteful number, since it uses less digits than its factorization.

1199085570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The square root of 1199085570 is about 34627.8149758254. The cubic root of 1199085570 is about 1062.3885764585.

The spelling of 1199085570 in words is "one billion, one hundred ninety-nine million, eighty-five thousand, five hundred seventy".