1990100159 has 2 divisors, whose sum is σ = 1990100160. Its totient is φ = 1990100158.

The previous prime is 1990100117. The next prime is 1990100191. The reversal of 1990100159 is 9510010991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1990100159 - 2¹⁶ = 1990034623 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1990100059) 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, 995050079 + 995050080.

It is an arithmetic number, because the mean of its divisors is an integer number (995050080).

Almost surely, 2^1990100159 is an apocalyptic number.

1990100159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990100159 is an equidigital number, since it uses as much as digits as its factorization.

1990100159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3645, while the sum is 35.

The square root of 1990100159 is about 44610.5386539997. The cubic root of 1990100159 is about 1257.8387740619.

The spelling of 1990100159 in words is "one billion, nine hundred ninety million, one hundred thousand, one hundred fifty-nine".