163541837 has 4 divisors (see below), whose sum is σ = 164829696. Its totient is φ = 162253980.

The previous prime is 163541821. The next prime is 163541839. The reversal of 163541837 is 738145361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 738145361 = 7369 ⋅100169.

It is a cyclic number.

It is not a de Polignac number, because 163541837 - 2⁴ = 163541821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163541837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163541839) 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, 643739 + ... + 643992.

It is an arithmetic number, because the mean of its divisors is an integer number (41207424).

Almost surely, 2^163541837 is an apocalyptic number.

It is an amenable number.

163541837 is a deficient number, since it is larger than the sum of its proper divisors (1287859).

163541837 is a wasteful number, since it uses less digits than its factorization.

163541837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287858.

The product of its digits is 60480, while the sum is 38.

The square root of 163541837 is about 12788.3477040625. The cubic root of 163541837 is about 546.8601667683.

The spelling of 163541837 in words is "one hundred sixty-three million, five hundred forty-one thousand, eight hundred thirty-seven".