1671322537 has 2 divisors, whose sum is σ = 1671322538. Its totient is φ = 1671322536.

The previous prime is 1671322529. The next prime is 1671322553. The reversal of 1671322537 is 7352231761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1635070096 + 36252441 = 40436^2 + 6021^2 .

It is a cyclic number.

It is not a de Polignac number, because 1671322537 - 2³ = 1671322529 is a prime.

It is a super-3 number, since 3×1671322537³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1671322496 and 1671322505.

It is not a weakly prime, because it can be changed into another prime (1671322567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835661268 + 835661269.

It is an arithmetic number, because the mean of its divisors is an integer number (835661269).

Almost surely, 2^1671322537 is an apocalyptic number.

It is an amenable number.

1671322537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671322537 is an equidigital number, since it uses as much as digits as its factorization.

1671322537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 1671322537 is about 40881.8118116113. The cubic root of 1671322537 is about 1186.7341039804.

The spelling of 1671322537 in words is "one billion, six hundred seventy-one million, three hundred twenty-two thousand, five hundred thirty-seven".