161797361 has 8 divisors (see below), whose sum is σ = 177212448. Its totient is φ = 146500000.

The previous prime is 161797343. The next prime is 161797367. The reversal of 161797361 is 163797161.

It is a happy number.

161797361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161797361 - 2¹⁰ = 161796337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161797367) 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, 26540 + ... + 32061.

It is an arithmetic number, because the mean of its divisors is an integer number (22151556).

Almost surely, 2^161797361 is an apocalyptic number.

161797361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161797361 is a deficient number, since it is larger than the sum of its proper divisors (15415087).

161797361 is a wasteful number, since it uses less digits than its factorization.

161797361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58863.

The product of its digits is 47628, while the sum is 41.

The square root of 161797361 is about 12719.9591587395. The cubic root of 161797361 is about 544.9087870245.

The spelling of 161797361 in words is "one hundred sixty-one million, seven hundred ninety-seven thousand, three hundred sixty-one".