161119001 has 4 divisors (see below), whose sum is σ = 161285904. Its totient is φ = 160952100.

The previous prime is 161118977. The next prime is 161119009. The reversal of 161119001 is 100911161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100911161 = 13 ⋅7762397.

It is a cyclic number.

It is not a de Polignac number, because 161119001 - 2¹⁰ = 161117977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161119009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81995 + ... + 83936.

It is an arithmetic number, because the mean of its divisors is an integer number (40321476).

Almost surely, 2^161119001 is an apocalyptic number.

It is an amenable number.

161119001 is a deficient number, since it is larger than the sum of its proper divisors (166903).

161119001 is an equidigital number, since it uses as much as digits as its factorization.

161119001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166902.

The product of its (nonzero) digits is 54, while the sum is 20.

The square root of 161119001 is about 12693.2659705846. The cubic root of 161119001 is about 544.1461826454.

The spelling of 161119001 in words is "one hundred sixty-one million, one hundred nineteen thousand, one".