1600872257 has 2 divisors, whose sum is σ = 1600872258. Its totient is φ = 1600872256.

The previous prime is 1600872223. The next prime is 1600872277. The reversal of 1600872257 is 7522780061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1312178176 + 288694081 = 36224^2 + 16991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1600872257 - 2²⁰ = 1599823681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1600872257.

It is not a weakly prime, because it can be changed into another prime (1600872277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800436128 + 800436129.

It is an arithmetic number, because the mean of its divisors is an integer number (800436129).

Almost surely, 2^1600872257 is an apocalyptic number.

It is an amenable number.

1600872257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600872257 is an equidigital number, since it uses as much as digits as its factorization.

1600872257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 1600872257 is about 40010.9017269044. The cubic root of 1600872257 is about 1169.8195979188.

The spelling of 1600872257 in words is "one billion, six hundred million, eight hundred seventy-two thousand, two hundred fifty-seven".