1990179828019 has 2 divisors, whose sum is σ = 1990179828020. Its totient is φ = 1990179828018.

The previous prime is 1990179827947. The next prime is 1990179828023. The reversal of 1990179828019 is 9108289710991.

It is a strong prime.

It is an emirp because it is prime and its reverse (9108289710991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1990179828019 - 2⁹ = 1990179827507 is a prime.

It is a super-2 number, since 2×1990179828019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1990179828419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995089914009 + 995089914010.

It is an arithmetic number, because the mean of its divisors is an integer number (995089914010).

Almost surely, 2^{1990179828019} is an apocalyptic number.

1990179828019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990179828019 is an equidigital number, since it uses as much as digits as its factorization.

1990179828019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 64.

The spelling of 1990179828019 in words is "one trillion, nine hundred ninety billion, one hundred seventy-nine million, eight hundred twenty-eight thousand, nineteen".