161385794 has 32 divisors (see below), whose sum is σ = 264249216. Its totient is φ = 73624320.

The previous prime is 161385761. The next prime is 161385797. The reversal of 161385794 is 497583161.

It is a super-3 number, since 3×161385794³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (161385797) 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 15 ways as a sum of consecutive naturals, for example, 243824 + ... + 244484.

It is an arithmetic number, because the mean of its divisors is an integer number (8257788).

Almost surely, 2^161385794 is an apocalyptic number.

161385794 is a deficient number, since it is larger than the sum of its proper divisors (102863422).

161385794 is a wasteful number, since it uses less digits than its factorization.

161385794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890.

The product of its digits is 181440, while the sum is 44.

The square root of 161385794 is about 12703.7708575053. The cubic root of 161385794 is about 544.4463631228.

The spelling of 161385794 in words is "one hundred sixty-one million, three hundred eighty-five thousand, seven hundred ninety-four".