1798940398499 has 8 divisors (see below), whose sum is σ = 1804758583008. Its totient is φ = 1793123115840.

The previous prime is 1798940398447. The next prime is 1798940398501. The reversal of 1798940398499 is 9948930498971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1798940398499 - 2¹² = 1798940394403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1798940398439) 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 in 7 ways as a sum of consecutive naturals, for example, 3891719 + ... + 4329359.

It is an arithmetic number, because the mean of its divisors is an integer number (225594822876).

Almost surely, 2^{1798940398499} is an apocalyptic number.

1798940398499 is a deficient number, since it is larger than the sum of its proper divisors (5818184509).

1798940398499 is a wasteful number, since it uses less digits than its factorization.

1798940398499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450925.

The product of its (nonzero) digits is 1269789696, while the sum is 80.

The spelling of 1798940398499 in words is "one trillion, seven hundred ninety-eight billion, nine hundred forty million, three hundred ninety-eight thousand, four hundred ninety-nine".