320849537 has 2 divisors, whose sum is σ = 320849538. Its totient is φ = 320849536.

The previous prime is 320849521. The next prime is 320849549. The reversal of 320849537 is 735948023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184987201 + 135862336 = 13601^2 + 11656^2 .

It is a cyclic number.

It is not a de Polignac number, because 320849537 - 2⁴ = 320849521 is a prime.

It is a super-2 number, since 2×320849537² = 205888850786228738, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 320849494 and 320849503.

It is not a weakly prime, because it can be changed into another prime (320849567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160424768 + 160424769.

It is an arithmetic number, because the mean of its divisors is an integer number (160424769).

Almost surely, 2^320849537 is an apocalyptic number.

It is an amenable number.

320849537 is a deficient number, since it is larger than the sum of its proper divisors (1).

320849537 is an equidigital number, since it uses as much as digits as its factorization.

320849537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 320849537 is about 17912.2733621392. The cubic root of 320849537 is about 684.5951304186.

The spelling of 320849537 in words is "three hundred twenty million, eight hundred forty-nine thousand, five hundred thirty-seven".