161441411 has 4 divisors (see below), whose sum is σ = 162603000. Its totient is φ = 160279824.

The previous prime is 161441407. The next prime is 161441429. The reversal of 161441411 is 114144161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161441411 - 2² = 161441407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161441431) 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, 580586 + ... + 580863.

It is an arithmetic number, because the mean of its divisors is an integer number (40650750).

Almost surely, 2^161441411 is an apocalyptic number.

161441411 is a deficient number, since it is larger than the sum of its proper divisors (1161589).

161441411 is a wasteful number, since it uses less digits than its factorization.

161441411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161588.

The product of its digits is 384, while the sum is 23.

The square root of 161441411 is about 12705.9596646613. The cubic root of 161441411 is about 544.5088985642.

Adding to 161441411 its reverse (114144161), we get a palindrome (275585572).

The spelling of 161441411 in words is "one hundred sixty-one million, four hundred forty-one thousand, four hundred eleven".