163371261 has 8 divisors (see below), whose sum is σ = 218096320. Its totient is φ = 108780192.

The previous prime is 163371251. The next prime is 163371269. The reversal of 163371261 is 162173361.

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

It is not a de Polignac number, because 163371261 - 2⁷ = 163371133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163371269) 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, 30616 + ... + 35553.

It is an arithmetic number, because the mean of its divisors is an integer number (27262040).

Almost surely, 2^163371261 is an apocalyptic number.

It is an amenable number.

163371261 is a deficient number, since it is larger than the sum of its proper divisors (54725059).

163371261 is an equidigital number, since it uses as much as digits as its factorization.

163371261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66995.

The product of its digits is 4536, while the sum is 30.

The square root of 163371261 is about 12781.6767679362. The cubic root of 163371261 is about 546.6699734994.

The spelling of 163371261 in words is "one hundred sixty-three million, three hundred seventy-one thousand, two hundred sixty-one".