119145691 has 4 divisors (see below), whose sum is σ = 136166512. Its totient is φ = 102124872.

The previous prime is 119145683. The next prime is 119145701. The reversal of 119145691 is 196541911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196541911 = 12437 ⋅15803.

It is a cyclic number.

It is not a de Polignac number, because 119145691 - 2³ = 119145683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 119145691.

It is not an unprimeable number, because it can be changed into a prime (119143691) 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 3 ways as a sum of consecutive naturals, for example, 8510400 + ... + 8510413.

It is an arithmetic number, because the mean of its divisors is an integer number (34041628).

Almost surely, 2^119145691 is an apocalyptic number.

119145691 is a deficient number, since it is larger than the sum of its proper divisors (17020821).

119145691 is an equidigital number, since it uses as much as digits as its factorization.

119145691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17020820.

The product of its digits is 9720, while the sum is 37.

The square root of 119145691 is about 10915.3878080442. The cubic root of 119145691 is about 492.0691221434.

The spelling of 119145691 in words is "one hundred nineteen million, one hundred forty-five thousand, six hundred ninety-one".