1199144238 has 16 divisors (see below), whose sum is σ = 2502562176. Its totient is φ = 382335800.

The previous prime is 1199144227. The next prime is 1199144269. The reversal of 1199144238 is 8324419911.

It is a self number, because there is not a number n which added to its sum of digits gives 1199144238.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4344588 + ... + 4344863.

It is an arithmetic number, because the mean of its divisors is an integer number (156410136).

Almost surely, 2^1199144238 is an apocalyptic number.

1199144238 is an abundant number, since it is smaller than the sum of its proper divisors (1303417938).

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

1199144238 is a wasteful number, since it uses less digits than its factorization.

1199144238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8689479.

The product of its digits is 62208, while the sum is 42.

The square root of 1199144238 is about 34628.6620879294. The cubic root of 1199144238 is about 1062.4059027718.

The spelling of 1199144238 in words is "one billion, one hundred ninety-nine million, one hundred forty-four thousand, two hundred thirty-eight".