161747753 has 8 divisors (see below), whose sum is σ = 168912000. Its totient is φ = 154594528.

The previous prime is 161747737. The next prime is 161747771. The reversal of 161747753 is 357747161.

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 161747753 - 2⁴ = 161747737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161747753.

It is not an unprimeable number, because it can be changed into a prime (161747723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45173 + ... + 48621.

It is an arithmetic number, because the mean of its divisors is an integer number (21114000).

Almost surely, 2^161747753 is an apocalyptic number.

It is an amenable number.

161747753 is a deficient number, since it is larger than the sum of its proper divisors (7164247).

161747753 is a wasteful number, since it uses less digits than its factorization.

161747753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511.

The product of its digits is 123480, while the sum is 41.

The square root of 161747753 is about 12718.0090029847. The cubic root of 161747753 is about 544.8530906108.

The spelling of 161747753 in words is "one hundred sixty-one million, seven hundred forty-seven thousand, seven hundred fifty-three".