18974689358036 has 6 divisors (see below), whose sum is σ = 33205706376570. Its totient is φ = 9487344679016.

The previous prime is 18974689358017. The next prime is 18974689358041. The reversal of 18974689358036 is 63085398647981.

It can be written as a sum of positive squares in only one way, i.e., 9637423536400 + 9337265821636 = 3104420^2 + 3055694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2371836169751 + ... + 2371836169758.

It is an arithmetic number, because the mean of its divisors is an integer number (5534284396095).

Almost surely, 2^{18974689358036} is an apocalyptic number.

It is an amenable number.

18974689358036 is a deficient number, since it is larger than the sum of its proper divisors (14231017018534).

18974689358036 is a wasteful number, since it uses less digits than its factorization.

18974689358036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743672339513 (or 4743672339511 counting only the distinct ones).

The product of its (nonzero) digits is 1881169920, while the sum is 77.

The spelling of 18974689358036 in words is "eighteen trillion, nine hundred seventy-four billion, six hundred eighty-nine million, three hundred fifty-eight thousand, thirty-six".