9238521081 has 4 divisors (see below), whose sum is σ = 12318028112. Its totient is φ = 6159014052.

The previous prime is 9238521073. The next prime is 9238521101. The reversal of 9238521081 is 1801258329.

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 not a de Polignac number, because 9238521081 - 2³ = 9238521073 is a prime.

It is a super-2 number, since 2×9238521081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9238521041) 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, 1539753511 + ... + 1539753516.

It is an arithmetic number, because the mean of its divisors is an integer number (3079507028).

Almost surely, 2^9238521081 is an apocalyptic number.

It is an amenable number.

9238521081 is a deficient number, since it is larger than the sum of its proper divisors (3079507031).

9238521081 is a wasteful number, since it uses less digits than its factorization.

9238521081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079507030.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 9238521081 is about 96117.2257246327. The cubic root of 9238521081 is about 2098.2995365827.

The spelling of 9238521081 in words is "nine billion, two hundred thirty-eight million, five hundred twenty-one thousand, eighty-one".