1192978855 has 16 divisors (see below), whose sum is σ = 1471530240. Its totient is φ = 928066048.

The previous prime is 1192978841. The next prime is 1192978867. The reversal of 1192978855 is 5588792911.

It is a cyclic number.

It is not a de Polignac number, because 1192978855 - 2⁵ = 1192978823 is a prime.

It is a super-2 number, since 2×1192978855² = 2846397096954222050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1192978796 and 1192978805.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 10026 + ... + 49864.

It is an arithmetic number, because the mean of its divisors is an integer number (91970640).

Almost surely, 2^1192978855 is an apocalyptic number.

1192978855 is a deficient number, since it is larger than the sum of its proper divisors (278551385).

1192978855 is a wasteful number, since it uses less digits than its factorization.

1192978855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40010.

The product of its digits is 1814400, while the sum is 55.

The square root of 1192978855 is about 34539.5259811133. The cubic root of 1192978855 is about 1060.5819917204.

The spelling of 1192978855 in words is "one billion, one hundred ninety-two million, nine hundred seventy-eight thousand, eight hundred fifty-five".