161073747 has 24 divisors (see below), whose sum is σ = 238964544. Its totient is φ = 104500224.

The previous prime is 161073739. The next prime is 161073749. The reversal of 161073747 is 747370161.

161073747 is a `hidden beast` number, since 1 + 610 + 7 + 37 + 4 + 7 = 666.

161073747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161073747 - 2³ = 161073739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161073749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80653 + ... + 82625.

It is an arithmetic number, because the mean of its divisors is an integer number (9956856).

Almost surely, 2^161073747 is an apocalyptic number.

161073747 is a deficient number, since it is larger than the sum of its proper divisors (77890797).

161073747 is a wasteful number, since it uses less digits than its factorization.

161073747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 161073747 is about 12691.4832466501. The cubic root of 161073747 is about 544.0952325257.

It can be divided in two parts, 1610 and 73747, that added together give a palindrome (75357).

The spelling of 161073747 in words is "one hundred sixty-one million, seventy-three thousand, seven hundred forty-seven".