1659087373 has 2 divisors, whose sum is σ = 1659087374. Its totient is φ = 1659087372.

The previous prime is 1659087347. The next prime is 1659087389. The reversal of 1659087373 is 3737809561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1586189929 + 72897444 = 39827^2 + 8538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1659087373 is a prime.

It is a super-2 number, since 2×1659087373² = 5505141822496082258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1659087343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829543686 + 829543687.

It is an arithmetic number, because the mean of its divisors is an integer number (829543687).

Almost surely, 2^1659087373 is an apocalyptic number.

It is an amenable number.

1659087373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659087373 is an equidigital number, since it uses as much as digits as its factorization.

1659087373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 1659087373 is about 40731.8962607930. The cubic root of 1659087373 is about 1183.8311209571.

The spelling of 1659087373 in words is "one billion, six hundred fifty-nine million, eighty-seven thousand, three hundred seventy-three".