1201178826 has 24 divisors (see below), whose sum is σ = 2755646244. Its totient is φ = 376840320.

The previous prime is 1201178821. The next prime is 1201178857. The reversal of 1201178826 is 6288711021.

It can be written as a sum of positive squares in 2 ways, for example, as 989039601 + 212139225 = 31449^2 + 14565^2 .

It is not an unprimeable number, because it can be changed into a prime (1201178821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1962405 + ... + 1963016.

Almost surely, 2^1201178826 is an apocalyptic number.

1201178826 is an abundant number, since it is smaller than the sum of its proper divisors (1554467418).

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

1201178826 is a wasteful number, since it uses less digits than its factorization.

1201178826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925446 (or 3925443 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 1201178826 is about 34658.0268624744. The cubic root of 1201178826 is about 1063.0064246212.

Adding to 1201178826 its reverse (6288711021), we get a palindrome (7489889847).

The spelling of 1201178826 in words is "one billion, two hundred one million, one hundred seventy-eight thousand, eight hundred twenty-six".