1191290041 has 8 divisors (see below), whose sum is σ = 1230884864. Its totient is φ = 1151768160.

The previous prime is 1191290029. The next prime is 1191290047. The reversal of 1191290041 is 1400921911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1191290041 - 2²⁵ = 1157735609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1191289991 and 1191290009.

It is not an unprimeable number, because it can be changed into a prime (1191290047) 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 7 ways as a sum of consecutive naturals, for example, 16021 + ... + 51373.

It is an arithmetic number, because the mean of its divisors is an integer number (153860608).

Almost surely, 2^1191290041 is an apocalyptic number.

It is an amenable number.

1191290041 is a deficient number, since it is larger than the sum of its proper divisors (39594823).

1191290041 is a wasteful number, since it uses less digits than its factorization.

1191290041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36471.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1191290041 is about 34515.0697666976. The cubic root of 1191290041 is about 1060.0812922703.

The spelling of 1191290041 in words is "one billion, one hundred ninety-one million, two hundred ninety thousand, forty-one".