18619340192 has 12 divisors (see below), whose sum is σ = 36656826066. Its totient is φ = 9309670080.

The previous prime is 18619340189. The next prime is 18619340197. The reversal of 18619340192 is 29104391681.

It can be written as a sum of positive squares in only one way, i.e., 12020052496 + 6599287696 = 109636^2 + 81236^2 .

It is not an unprimeable number, because it can be changed into a prime (18619340197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290927159 + ... + 290927222.

Almost surely, 2^18619340192 is an apocalyptic number.

It is an amenable number.

18619340192 is a deficient number, since it is larger than the sum of its proper divisors (18037485874).

18619340192 is an equidigital number, since it uses as much as digits as its factorization.

18619340192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581854391 (or 581854383 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 18619340192 in words is "eighteen billion, six hundred nineteen million, three hundred forty thousand, one hundred ninety-two".