19006042437 has 18 divisors (see below), whose sum is σ = 28974128742. Its totient is φ = 12003814224.

The previous prime is 19006042411. The next prime is 19006042439. The reversal of 19006042437 is 73424060091.

19006042437 is a `hidden beast` number, since 1 + 9 + 0 + 0 + 604 + 2 + 43 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15060443841 + 3945598596 = 122721^2 + 62814^2 .

It is not a de Polignac number, because 19006042437 - 2⁶ = 19006042373 is a prime.

It is a super-2 number, since 2×19006042437² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19006042439) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2921658 + ... + 2928155.

It is an arithmetic number, because the mean of its divisors is an integer number (1609673819).

Almost surely, 2^19006042437 is an apocalyptic number.

It is an amenable number.

19006042437 is a deficient number, since it is larger than the sum of its proper divisors (9968086305).

19006042437 is a wasteful number, since it uses less digits than its factorization.

19006042437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5849857 (or 5849835 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 19006042437 in words is "nineteen billion, six million, forty-two thousand, four hundred thirty-seven".