19587472937 has 2 divisors, whose sum is σ = 19587472938. Its totient is φ = 19587472936.

The previous prime is 19587472889. The next prime is 19587472939. The reversal of 19587472937 is 73927478591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17101054441 + 2486418496 = 130771^2 + 49864^2 .

It is a cyclic number.

It is not a de Polignac number, because 19587472937 - 2²² = 19583278633 is a prime.

Together with 19587472939, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19587472937.

It is not a weakly prime, because it can be changed into another prime (19587472939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9793736468 + 9793736469.

It is an arithmetic number, because the mean of its divisors is an integer number (9793736469).

Almost surely, 2^19587472937 is an apocalyptic number.

It is an amenable number.

19587472937 is a deficient number, since it is larger than the sum of its proper divisors (1).

19587472937 is an equidigital number, since it uses as much as digits as its factorization.

19587472937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 62.

The spelling of 19587472937 in words is "nineteen billion, five hundred eighty-seven million, four hundred seventy-two thousand, nine hundred thirty-seven".