19138376142 has 32 divisors (see below), whose sum is σ = 43567040160. Its totient is φ = 6223861440.

The previous prime is 19138376141. The next prime is 19138376149. The reversal of 19138376142 is 24167383191.

19138376142 is a `hidden beast` number, since 1 + 9 + 138 + 376 + 142 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19138376141) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4319913 + ... + 4324340.

It is an arithmetic number, because the mean of its divisors is an integer number (1361470005).

Almost surely, 2^19138376142 is an apocalyptic number.

19138376142 is an abundant number, since it is smaller than the sum of its proper divisors (24428664018).

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

19138376142 is a wasteful number, since it uses less digits than its factorization.

19138376142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8644305 (or 8644299 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The spelling of 19138376142 in words is "nineteen billion, one hundred thirty-eight million, three hundred seventy-six thousand, one hundred forty-two".