9245181466921 has 9 divisors (see below), whose sum is σ = 9757440858333. Its totient is φ = 8758538238060.

The previous prime is 9245181466919. The next prime is 9245181466931. The reversal of 9245181466921 is 1296641815429.

The square root of 9245181466921 is 3040589.

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

It is not a de Polignac number, because 9245181466921 - 2¹ = 9245181466919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9245181466931) 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, 57691176 + ... + 57851206.

Almost surely, 2^{9245181466921} is an apocalyptic number.

9245181466921 is the 3040589-th square number.

9245181466921 is the 1520295-th centered octagonal number.

It is an amenable number.

9245181466921 is a deficient number, since it is larger than the sum of its proper divisors (512259391412).

9245181466921 is an frugal number, since it uses more digits than its factorization.

9245181466921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320100 (or 160050 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 58.

The spelling of 9245181466921 in words is "nine trillion, two hundred forty-five billion, one hundred eighty-one million, four hundred sixty-six thousand, nine hundred twenty-one".