19139434284 has 12 divisors (see below), whose sum is σ = 44658680024. Its totient is φ = 6379811424.

The previous prime is 19139434283. The next prime is 19139434319. The reversal of 19139434284 is 48243493191.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×19139434284³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (19139434283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 797476417 + ... + 797476440.

Almost surely, 2^19139434284 is an apocalyptic number.

It is an amenable number.

19139434284 is an abundant number, since it is smaller than the sum of its proper divisors (25519245740).

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

19139434284 is a wasteful number, since it uses less digits than its factorization.

19139434284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594952864 (or 1594952862 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The spelling of 19139434284 in words is "nineteen billion, one hundred thirty-nine million, four hundred thirty-four thousand, two hundred eighty-four".