1192780872 has 48 divisors (see below), whose sum is σ = 3274715340. Its totient is φ = 392145408.

The previous prime is 1192780871. The next prime is 1192780873. The reversal of 1192780872 is 2780872911.

It is an interprime number because it is at equal distance from previous prime (1192780871) and next prime (1192780873).

It can be written as a sum of positive squares in 2 ways, for example, as 1023104196 + 169676676 = 31986^2 + 13026^2 .

It is not an unprimeable number, because it can be changed into a prime (1192780871) 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 11 ways as a sum of consecutive naturals, for example, 108213 + ... + 118724.

Almost surely, 2^1192780872 is an apocalyptic number.

1192780872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1192780872 is an abundant number, since it is smaller than the sum of its proper divisors (2081934468).

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

1192780872 is a wasteful number, since it uses less digits than its factorization.

1192780872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227022 (or 227015 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 1192780872 is about 34536.6598269144. The cubic root of 1192780872 is about 1060.5233181962.

The spelling of 1192780872 in words is "one billion, one hundred ninety-two million, seven hundred eighty thousand, eight hundred seventy-two".