1850168351651 has 2 divisors, whose sum is σ = 1850168351652. Its totient is φ = 1850168351650.

The previous prime is 1850168351627. The next prime is 1850168351729. The reversal of 1850168351651 is 1561538610581.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1850168351651 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1850168351651.

It is not a weakly prime, because it can be changed into another prime (1850168351621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925084175825 + 925084175826.

It is an arithmetic number, because the mean of its divisors is an integer number (925084175826).

Almost surely, 2^{1850168351651} is an apocalyptic number.

1850168351651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1850168351651 is an equidigital number, since it uses as much as digits as its factorization.

1850168351651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864000, while the sum is 50.

The spelling of 1850168351651 in words is "one trillion, eight hundred fifty billion, one hundred sixty-eight million, three hundred fifty-one thousand, six hundred fifty-one".