1670863297 has 2 divisors, whose sum is σ = 1670863298. Its totient is φ = 1670863296.

The previous prime is 1670863273. The next prime is 1670863349. The reversal of 1670863297 is 7923680761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1450162561 + 220700736 = 38081^2 + 14856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1670863297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1670863297.

It is not a weakly prime, because it can be changed into another prime (1670863697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835431648 + 835431649.

It is an arithmetic number, because the mean of its divisors is an integer number (835431649).

Almost surely, 2^1670863297 is an apocalyptic number.

It is an amenable number.

1670863297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670863297 is an equidigital number, since it uses as much as digits as its factorization.

1670863297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1670863297 is about 40876.1947470652. The cubic root of 1670863297 is about 1186.6253985126.

The spelling of 1670863297 in words is "one billion, six hundred seventy million, eight hundred sixty-three thousand, two hundred ninety-seven".