161071738 has 8 divisors (see below), whose sum is σ = 241927380. Its totient is φ = 80429280.

The previous prime is 161071733. The next prime is 161071751. The reversal of 161071738 is 837170161.

161071738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 102961609 + 58110129 = 10147^2 + 7623^2 .

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

It is not an unprimeable number, because it can be changed into a prime (161071733) 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, 51393 + ... + 54436.

Almost surely, 2^161071738 is an apocalyptic number.

161071738 is a deficient number, since it is larger than the sum of its proper divisors (80855642).

161071738 is a wasteful number, since it uses less digits than its factorization.

161071738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106592.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 161071738 is about 12691.4040988379. The cubic root of 161071738 is about 544.0929704317.

The spelling of 161071738 in words is "one hundred sixty-one million, seventy-one thousand, seven hundred thirty-eight".