1199167642 has 16 divisors (see below), whose sum is σ = 1840144680. Its totient is φ = 585937152.

The previous prime is 1199167633. The next prime is 1199167741. The reversal of 1199167642 is 2467619911.

It is a Cunningham number, because it is equal to 34629²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1199167641 + 1 = 34629^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1199167592 and 1199167601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21763 + ... + 53590.

Almost surely, 2^1199167642 is an apocalyptic number.

1199167642 is a deficient number, since it is larger than the sum of its proper divisors (640977038).

1199167642 is a wasteful number, since it uses less digits than its factorization.

1199167642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75537.

The product of its digits is 163296, while the sum is 46.

The square root of 1199167642 is about 34629.0000144388. Note that the first 4 decimals coincide. The cubic root of 1199167642 is about 1062.4128144746.

The spelling of 1199167642 in words is "one billion, one hundred ninety-nine million, one hundred sixty-seven thousand, six hundred forty-two".