9162538561 has 4 divisors (see below), whose sum is σ = 9995496624. Its totient is φ = 8329580500.

The previous prime is 9162538547. The next prime is 9162538597. The reversal of 9162538561 is 1658352619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9162538561 - 2¹³ = 9162530369 is a prime.

It is a super-2 number, since 2×9162538561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9162538531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416479015 + ... + 416479036.

It is an arithmetic number, because the mean of its divisors is an integer number (2498874156).

Almost surely, 2^9162538561 is an apocalyptic number.

It is an amenable number.

9162538561 is a deficient number, since it is larger than the sum of its proper divisors (832958063).

9162538561 is a wasteful number, since it uses less digits than its factorization.

9162538561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832958062.

The product of its digits is 388800, while the sum is 46.

The square root of 9162538561 is about 95721.1500192094. The cubic root of 9162538561 is about 2092.5311824071.

The spelling of 9162538561 in words is "nine billion, one hundred sixty-two million, five hundred thirty-eight thousand, five hundred sixty-one".