1019993804494 has 8 divisors (see below), whose sum is σ = 1748560807728. Its totient is φ = 437140201920.

The previous prime is 1019993804411. The next prime is 1019993804521. The reversal of 1019993804494 is 4944083999101.

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

It is a super-2 number, since 2×1019993804494² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36428350147 + ... + 36428350174.

It is an arithmetic number, because the mean of its divisors is an integer number (218570100966).

Almost surely, 2^{1019993804494} is an apocalyptic number.

1019993804494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1019993804494 is a deficient number, since it is larger than the sum of its proper divisors (728567003234).

1019993804494 is an equidigital number, since it uses as much as digits as its factorization.

1019993804494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72856700330.

The product of its (nonzero) digits is 10077696, while the sum is 61.

The spelling of 1019993804494 in words is "one trillion, nineteen billion, nine hundred ninety-three million, eight hundred four thousand, four hundred ninety-four".