1199009628 has 120 divisors (see below), whose sum is σ = 3200047312. Its totient is φ = 393030144.

The previous prime is 1199009593. The next prime is 1199009629. The reversal of 1199009628 is 8269009911.

1199009628 is a `hidden beast` number, since 1 + 19 + 9 + 0 + 0 + 9 + 628 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199009629) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7636926 + ... + 7637082.

Almost surely, 2^1199009628 is an apocalyptic number.

1199009628 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 1199009628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600023656).

1199009628 is an abundant number, since it is smaller than the sum of its proper divisors (2001037684).

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

1199009628 is an frugal number, since it uses more digits than its factorization.

1199009628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 1199009628 is about 34626.7184122319. The cubic root of 1199009628 is about 1062.3661478072.

The spelling of 1199009628 in words is "one billion, one hundred ninety-nine million, nine thousand, six hundred twenty-eight".