9151228073 has 8 divisors (see below), whose sum is σ = 9861301128. Its totient is φ = 8442031104.

The previous prime is 9151228057. The next prime is 9151228087. The reversal of 9151228073 is 3708221519.

It can be written as a sum of positive squares in 4 ways, for example, as 583319104 + 8567908969 = 24152^2 + 92563^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9151228073 - 2⁴ = 9151228057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9151228573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197240 + ... + 239177.

It is an arithmetic number, because the mean of its divisors is an integer number (1232662641).

Almost surely, 2^9151228073 is an apocalyptic number.

It is an amenable number.

9151228073 is a deficient number, since it is larger than the sum of its proper divisors (710073055).

9151228073 is a wasteful number, since it uses less digits than its factorization.

9151228073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438043.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 9151228073 is about 95662.0513735724. The cubic root of 9151228073 is about 2091.6698019801.

The spelling of 9151228073 in words is "nine billion, one hundred fifty-one million, two hundred twenty-eight thousand, seventy-three".