1161878026 has 8 divisors (see below), whose sum is σ = 1751664420. Its totient is φ = 577989888.

The previous prime is 1161877991. The next prime is 1161878027. The reversal of 1161878026 is 6208781611.

It can be written as a sum of positive squares in 2 ways, for example, as 1078137225 + 83740801 = 32835^2 + 9151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1161878026.

It is not an unprimeable number, because it can be changed into a prime (1161878027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1474071 + ... + 1474858.

Almost surely, 2^1161878026 is an apocalyptic number.

1161878026 is a deficient number, since it is larger than the sum of its proper divisors (589786394).

1161878026 is a wasteful number, since it uses less digits than its factorization.

1161878026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949128.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 1161878026 is about 34086.3319528517. The cubic root of 1161878026 is about 1051.2843017910.

The spelling of 1161878026 in words is "one billion, one hundred sixty-one million, eight hundred seventy-eight thousand, twenty-six".