1521141191 has 2 divisors, whose sum is σ = 1521141192. Its totient is φ = 1521141190.

The previous prime is 1521141163. The next prime is 1521141221. The reversal of 1521141191 is 1911411251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1521141191 - 2²² = 1516946887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1521141191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1521141161) by changing a digit.

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 as a sum of consecutive naturals, namely, 760570595 + 760570596.

It is an arithmetic number, because the mean of its divisors is an integer number (760570596).

Almost surely, 2^1521141191 is an apocalyptic number.

1521141191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521141191 is an equidigital number, since it uses as much as digits as its factorization.

1521141191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 26.

The square root of 1521141191 is about 39001.8100990198. The cubic root of 1521141191 is about 1150.0670889657.

The spelling of 1521141191 in words is "one billion, five hundred twenty-one million, one hundred forty-one thousand, one hundred ninety-one".