19145194734 has 16 divisors (see below), whose sum is σ = 38939379840. Its totient is φ = 6273566520.

The previous prime is 19145194727. The next prime is 19145194777. The reversal of 19145194734 is 43749154191.

It is a congruent number.

It is an unprimeable number.

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, 27040882 + ... + 27041589.

It is an arithmetic number, because the mean of its divisors is an integer number (2433711240).

Almost surely, 2^19145194734 is an apocalyptic number.

19145194734 is an abundant number, since it is smaller than the sum of its proper divisors (19794185106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19145194734 is a wasteful number, since it uses less digits than its factorization.

19145194734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54082535.

The product of its digits is 544320, while the sum is 48.

The spelling of 19145194734 in words is "nineteen billion, one hundred forty-five million, one hundred ninety-four thousand, seven hundred thirty-four".