1019998738539 has 48 divisors (see below), whose sum is σ = 1667094549120. Its totient is φ = 618071549760.

The previous prime is 1019998738529. The next prime is 1019998738601. The reversal of 1019998738539 is 9358378999101.

1019998738539 is a `hidden beast` number, since 1 + 0 + 1 + 9 + 9 + 9 + 87 + 3 + 8 + 539 = 666.

It is not a de Polignac number, because 1019998738539 - 2³⁹ = 470242924651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1019998738529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16587352 + ... + 16648730.

It is an arithmetic number, because the mean of its divisors is an integer number (34731136440).

Almost surely, 2^{1019998738539} is an apocalyptic number.

1019998738539 is a deficient number, since it is larger than the sum of its proper divisors (647095810581).

1019998738539 is an equidigital number, since it uses as much as digits as its factorization.

1019998738539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67622 (or 67610 counting only the distinct ones).

The product of its (nonzero) digits is 132269760, while the sum is 72.

The spelling of 1019998738539 in words is "one trillion, nineteen billion, nine hundred ninety-eight million, seven hundred thirty-eight thousand, five hundred thirty-nine".