1601323937 has 2 divisors, whose sum is σ = 1601323938. Its totient is φ = 1601323936.

The previous prime is 1601323931. The next prime is 1601323939. The reversal of 1601323937 is 7393231061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1601280256 + 43681 = 40016^2 + 209^2 .

It is an emirp because it is prime and its reverse (7393231061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1601323937 - 2⁸ = 1601323681 is a prime.

Together with 1601323939, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1601323897 and 1601323906.

It is not a weakly prime, because it can be changed into another prime (1601323931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800661968 + 800661969.

It is an arithmetic number, because the mean of its divisors is an integer number (800661969).

Almost surely, 2^1601323937 is an apocalyptic number.

It is an amenable number.

1601323937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601323937 is an equidigital number, since it uses as much as digits as its factorization.

1601323937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 1601323937 is about 40016.5457904602. The cubic root of 1601323937 is about 1169.9296076188.

Adding to 1601323937 its reverse (7393231061), we get a palindrome (8994554998).

The spelling of 1601323937 in words is "one billion, six hundred one million, three hundred twenty-three thousand, nine hundred thirty-seven".