19087230628 has 12 divisors (see below), whose sum is σ = 33508026972. Its totient is φ = 9513508640.

The previous prime is 19087230623. The next prime is 19087230629. The reversal of 19087230628 is 82603278091.

It can be written as a sum of positive squares in 2 ways, for example, as 5847966784 + 13239263844 = 76472^2 + 115062^2 .

It is a super-2 number, since 2×19087230628² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19087230623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7525243 + ... + 7527778.

It is an arithmetic number, because the mean of its divisors is an integer number (2792335581).

Almost surely, 2^19087230628 is an apocalyptic number.

It is an amenable number.

19087230628 is a deficient number, since it is larger than the sum of its proper divisors (14420796344).

19087230628 is a wasteful number, since it uses less digits than its factorization.

19087230628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15053342 (or 15053340 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 19087230628 in words is "nineteen billion, eighty-seven million, two hundred thirty thousand, six hundred twenty-eight".