1191094902 has 64 divisors (see below), whose sum is σ = 2899281600. Its totient is φ = 360783360.

The previous prime is 1191094901. The next prime is 1191094939. The reversal of 1191094902 is 2094901911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191094901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4252 + ... + 48992.

It is an arithmetic number, because the mean of its divisors is an integer number (45301275).

Almost surely, 2^1191094902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1191094902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1449640800).

1191094902 is an abundant number, since it is smaller than the sum of its proper divisors (1708186698).

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

1191094902 is a wasteful number, since it uses less digits than its factorization.

1191094902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44798 (or 44792 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 1191094902 is about 34512.2427842643. The cubic root of 1191094902 is about 1060.0234069828.

The spelling of 1191094902 in words is "one billion, one hundred ninety-one million, ninety-four thousand, nine hundred two".