161359693 has 8 divisors (see below), whose sum is σ = 180122976. Its totient is φ = 143278800.

The previous prime is 161359687. The next prime is 161359727. The reversal of 161359693 is 396953161.

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 161359693 - 2⁵ = 161359661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161359603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170098 + ... + 171043.

It is an arithmetic number, because the mean of its divisors is an integer number (22515372).

Almost surely, 2^161359693 is an apocalyptic number.

It is an amenable number.

161359693 is a deficient number, since it is larger than the sum of its proper divisors (18763283).

161359693 is a wasteful number, since it uses less digits than its factorization.

161359693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341195.

The product of its digits is 131220, while the sum is 43.

The square root of 161359693 is about 12702.7435225624. The cubic root of 161359693 is about 544.4170103520.

The spelling of 161359693 in words is "one hundred sixty-one million, three hundred fifty-nine thousand, six hundred ninety-three".