19742004145 has 16 divisors (see below), whose sum is σ = 23814000000. Its totient is φ = 15711422848.

The previous prime is 19742004089. The next prime is 19742004151. The reversal of 19742004145 is 54140024791.

It is a cyclic number.

It is not a de Polignac number, because 19742004145 - 2²¹ = 19739906993 is a prime.

It is a super-2 number, since 2×19742004145² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 738981 + ... + 765229.

It is an arithmetic number, because the mean of its divisors is an integer number (1488375000).

Almost surely, 2^19742004145 is an apocalyptic number.

It is an amenable number.

19742004145 is a deficient number, since it is larger than the sum of its proper divisors (4071995855).

19742004145 is a wasteful number, since it uses less digits than its factorization.

19742004145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27032.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 19742004145 in words is "nineteen billion, seven hundred forty-two million, four thousand, one hundred forty-five".