1190990972 has 24 divisors (see below), whose sum is σ = 2101192800. Its totient is φ = 590662080.

The previous prime is 1190990903. The next prime is 1190990989. The reversal of 1190990972 is 2790990911.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 822353 + ... + 823799.

It is an arithmetic number, because the mean of its divisors is an integer number (87549700).

Almost surely, 2^1190990972 is an apocalyptic number.

It is an amenable number.

1190990972 is a deficient number, since it is larger than the sum of its proper divisors (910201828).

1190990972 is a wasteful number, since it uses less digits than its factorization.

1190990972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 47.

The square root of 1190990972 is about 34510.7370538504. The cubic root of 1190990972 is about 1059.9925750044.

The spelling of 1190990972 in words is "one billion, one hundred ninety million, nine hundred ninety thousand, nine hundred seventy-two".