19913067734 has 16 divisors (see below), whose sum is σ = 34209796608. Its totient is φ = 8515894632.

The previous prime is 19913067659. The next prime is 19913067767. The reversal of 19913067734 is 43776031991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1516334 + ... + 1529409.

It is an arithmetic number, because the mean of its divisors is an integer number (2138112288).

Almost surely, 2^19913067734 is an apocalyptic number.

19913067734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19913067734 is a deficient number, since it is larger than the sum of its proper divisors (14296728874).

19913067734 is a wasteful number, since it uses less digits than its factorization.

19913067734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046219.

The product of its (nonzero) digits is 857304, while the sum is 50.

The spelling of 19913067734 in words is "nineteen billion, nine hundred thirteen million, sixty-seven thousand, seven hundred thirty-four".