18941174805316 has 27 divisors (see below), whose sum is σ = 34329929203479. Its totient is φ = 9143893563168.

The previous prime is 18941174805283. The next prime is 18941174805317. The reversal of 18941174805316 is 61350847114981.

The square root of 18941174805316 is 4352146.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4982761484100 + 13958413321216 = 2232210^2 + 3736096^2 .

It is a super-2 number, since 2×18941174805316² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18941174805317) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 252386950 + ... + 252461986.

Almost surely, 2^{18941174805316} is an apocalyptic number.

18941174805316 is the 4352146-th square number.

It is an amenable number.

18941174805316 is a deficient number, since it is larger than the sum of its proper divisors (15388754398163).

18941174805316 is an frugal number, since it uses more digits than its factorization.

18941174805316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150136 (or 75068 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 18941174805316 in words is "eighteen trillion, nine hundred forty-one billion, one hundred seventy-four million, eight hundred five thousand, three hundred sixteen".