190060991 has 2 divisors, whose sum is σ = 190060992. Its totient is φ = 190060990.

The previous prime is 190060979. The next prime is 190060999. The reversal of 190060991 is 199060091.

It is a strong prime.

It is an emirp because it is prime and its reverse (199060091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190060991 - 2¹⁰ = 190059967 is a prime.

It is a super-2 number, since 2×190060991² = 72246360599804162, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190060999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95030495 + 95030496.

It is an arithmetic number, because the mean of its divisors is an integer number (95030496).

Almost surely, 2^190060991 is an apocalyptic number.

190060991 is a deficient number, since it is larger than the sum of its proper divisors (1).

190060991 is an equidigital number, since it uses as much as digits as its factorization.

190060991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 190060991 is about 13786.2609506711. The cubic root of 190060991 is about 574.9512155209.

The spelling of 190060991 in words is "one hundred ninety million, sixty thousand, nine hundred ninety-one".