1191848394 has 32 divisors (see below), whose sum is σ = 2639218176. Its totient is φ = 355774320.

The previous prime is 1191848353. The next prime is 1191848423. The reversal of 1191848394 is 4938481911.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 130342 + ... + 139185.

It is an arithmetic number, because the mean of its divisors is an integer number (82475568).

Almost surely, 2^1191848394 is an apocalyptic number.

1191848394 is an abundant number, since it is smaller than the sum of its proper divisors (1447369782).

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

1191848394 is a wasteful number, since it uses less digits than its factorization.

1191848394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269610.

The product of its digits is 248832, while the sum is 48.

The square root of 1191848394 is about 34523.1573585036. The cubic root of 1191848394 is about 1060.2468850590.

The spelling of 1191848394 in words is "one billion, one hundred ninety-one million, eight hundred forty-eight thousand, three hundred ninety-four".