1199538436 has 12 divisors (see below), whose sum is σ = 2101700160. Its totient is φ = 599052680.

The previous prime is 1199538433. The next prime is 1199538443. The reversal of 1199538436 is 6348359911.

It is a self number, because there is not a number n which added to its sum of digits gives 1199538436.

It is not an unprimeable number, because it can be changed into a prime (1199538433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175360 + ... + 182071.

It is an arithmetic number, because the mean of its divisors is an integer number (175141680).

Almost surely, 2^1199538436 is an apocalyptic number.

It is an amenable number.

1199538436 is a deficient number, since it is larger than the sum of its proper divisors (902161724).

1199538436 is a wasteful number, since it uses less digits than its factorization.

1199538436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358274 (or 358272 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The square root of 1199538436 is about 34634.3534081409. The cubic root of 1199538436 is about 1062.5223058939.

The spelling of 1199538436 in words is "one billion, one hundred ninety-nine million, five hundred thirty-eight thousand, four hundred thirty-six".