18374073601 has 9 divisors (see below), whose sum is σ = 19898094531. Its totient is φ = 16959056712.

The previous prime is 18374073587. The next prime is 18374073611. The reversal of 18374073601 is 10637047381.

The square root of 18374073601 is 135551.

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

It can be written as a sum of positive squares in only one way, i.e., 2718058225 + 15656015376 = 52135^2 + 125124^2 .

It is not a de Polignac number, because 18374073601 - 2¹¹ = 18374071553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18374073611) 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, 1756950 + ... + 1767376.

Almost surely, 2^18374073601 is an apocalyptic number.

18374073601 is the 135551-st square number.

18374073601 is the 67776-th centered octagonal number.

It is an amenable number.

18374073601 is a deficient number, since it is larger than the sum of its proper divisors (1524020930).

18374073601 is an frugal number, since it uses more digits than its factorization.

18374073601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20880 (or 10440 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 18374073601 in words is "eighteen billion, three hundred seventy-four million, seventy-three thousand, six hundred one".