161324837 has 4 divisors (see below), whose sum is σ = 166528896. Its totient is φ = 156120780.

The previous prime is 161324831. The next prime is 161324843. The reversal of 161324837 is 738423161.

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.

It is an interprime number because it is at equal distance from previous prime (161324831) and next prime (161324843).

It is a cyclic number.

It is not a de Polignac number, because 161324837 - 2²⁴ = 144547621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161324797 and 161324806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161324831) 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, 2601983 + ... + 2602044.

It is an arithmetic number, because the mean of its divisors is an integer number (41632224).

Almost surely, 2^161324837 is an apocalyptic number.

It is an amenable number.

161324837 is a deficient number, since it is larger than the sum of its proper divisors (5204059).

161324837 is an equidigital number, since it uses as much as digits as its factorization.

161324837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204058.

The product of its digits is 24192, while the sum is 35.

The square root of 161324837 is about 12701.3714613816. The cubic root of 161324837 is about 544.3778069105.

Adding to 161324837 its reverse (738423161), we get a palindrome (899747998).

The spelling of 161324837 in words is "one hundred sixty-one million, three hundred twenty-four thousand, eight hundred thirty-seven".