161147641 has 8 divisors (see below), whose sum is σ = 176131584. Its totient is φ = 146775360.

The previous prime is 161147639. The next prime is 161147647. The reversal of 161147641 is 146741161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161147641 - 2¹ = 161147639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (161147647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152365 + ... + 153418.

It is an arithmetic number, because the mean of its divisors is an integer number (22016448).

Almost surely, 2^161147641 is an apocalyptic number.

It is an amenable number.

161147641 is a deficient number, since it is larger than the sum of its proper divisors (14983943).

161147641 is a wasteful number, since it uses less digits than its factorization.

161147641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305831.

The product of its digits is 4032, while the sum is 31.

The square root of 161147641 is about 12694.3940777022. The cubic root of 161147641 is about 544.1784226321.

The spelling of 161147641 in words is "one hundred sixty-one million, one hundred forty-seven thousand, six hundred forty-one".