161193838 has 8 divisors (see below), whose sum is σ = 260390088. Its totient is φ = 74397144.

The previous prime is 161193833. The next prime is 161193839. The reversal of 161193838 is 838391161.

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

It is a self number, because there is not a number n which added to its sum of digits gives 161193838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161193833) 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, 3099856 + ... + 3099907.

It is an arithmetic number, because the mean of its divisors is an integer number (32548761).

Almost surely, 2^161193838 is an apocalyptic number.

161193838 is a deficient number, since it is larger than the sum of its proper divisors (99196250).

161193838 is a wasteful number, since it uses less digits than its factorization.

161193838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6199778.

The product of its digits is 31104, while the sum is 40.

The square root of 161193838 is about 12696.2135300254. The cubic root of 161193838 is about 544.2304184469.

The spelling of 161193838 in words is "one hundred sixty-one million, one hundred ninety-three thousand, eight hundred thirty-eight".