161357673 has 16 divisors (see below), whose sum is σ = 229977216. Its totient is φ = 100383360.

The previous prime is 161357663. The next prime is 161357683. The reversal of 161357673 is 376753161.

It is an interprime number because it is at equal distance from previous prime (161357663) and next prime (161357683).

It is not a de Polignac number, because 161357673 - 2¹⁰ = 161356649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161357663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25690 + ... + 31347.

It is an arithmetic number, because the mean of its divisors is an integer number (14373576).

Almost surely, 2^161357673 is an apocalyptic number.

It is an amenable number.

161357673 is a deficient number, since it is larger than the sum of its proper divisors (68619543).

161357673 is a wasteful number, since it uses less digits than its factorization.

161357673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57104.

The product of its digits is 79380, while the sum is 39.

The square root of 161357673 is about 12702.6640119307. The cubic root of 161357673 is about 544.4147385600.

The spelling of 161357673 in words is "one hundred sixty-one million, three hundred fifty-seven thousand, six hundred seventy-three".