1192191012 has 18 divisors (see below), whose sum is σ = 3013594038. Its totient is φ = 397396992.

The previous prime is 1192190941. The next prime is 1192191017. The reversal of 1192191012 is 2101912911.

It can be written as a sum of positive squares in only one way, i.e., 979439616 + 212751396 = 31296^2 + 14586^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1192191017) 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 5 ways as a sum of consecutive naturals, for example, 16558173 + ... + 16558244.

It is an arithmetic number, because the mean of its divisors is an integer number (167421891).

Almost surely, 2^1192191012 is an apocalyptic number.

1192191012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1192191012 is an abundant number, since it is smaller than the sum of its proper divisors (1821403026).

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

1192191012 is a wasteful number, since it uses less digits than its factorization.

1192191012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33116427 (or 33116422 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The square root of 1192191012 is about 34528.1191494700. The cubic root of 1192191012 is about 1060.3484709280.

The spelling of 1192191012 in words is "one billion, one hundred ninety-two million, one hundred ninety-one thousand, twelve".