161085741 has 8 divisors (see below), whose sum is σ = 214849440. Its totient is φ = 107356272.

The previous prime is 161085739. The next prime is 161085751. The reversal of 161085741 is 147580161.

It is a happy number.

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

It is not a de Polignac number, because 161085741 - 2¹ = 161085739 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161085731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5931 + ... + 18903.

It is an arithmetic number, because the mean of its divisors is an integer number (26856180).

Almost surely, 2^161085741 is an apocalyptic number.

It is an amenable number.

161085741 is a deficient number, since it is larger than the sum of its proper divisors (53763699).

161085741 is a wasteful number, since it uses less digits than its factorization.

161085741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17115.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 161085741 is about 12691.9557594565. The cubic root of 161085741 is about 544.1087371395.

The spelling of 161085741 in words is "one hundred sixty-one million, eighty-five thousand, seven hundred forty-one".