1190091601 has 2 divisors, whose sum is σ = 1190091602. Its totient is φ = 1190091600.

The previous prime is 1190091593. The next prime is 1190091611. The reversal of 1190091601 is 1061900911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669567376 + 520524225 = 25876^2 + 22815^2 .

It is an emirp because it is prime and its reverse (1061900911) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1091600611 and 1160061901.

It is a cyclic number.

It is not a de Polignac number, because 1190091601 - 2³ = 1190091593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1190091601.

It is not a weakly prime, because it can be changed into another prime (1190091611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595045800 + 595045801.

It is an arithmetic number, because the mean of its divisors is an integer number (595045801).

Almost surely, 2^1190091601 is an apocalyptic number.

It is an amenable number.

1190091601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1190091601 is an equidigital number, since it uses as much as digits as its factorization.

1190091601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 1190091601 is about 34497.7042859376. The cubic root of 1190091601 is about 1059.7256917472.

The spelling of 1190091601 in words is "one billion, one hundred ninety million, ninety-one thousand, six hundred one".