9152728491 has 8 divisors (see below), whose sum is σ = 12734231040. Its totient is φ = 5836522472.

The previous prime is 9152728489. The next prime is 9152728511. The reversal of 9152728491 is 1948272519.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9152728491 - 2¹ = 9152728489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9152728491.

It is not an unprimeable number, because it can be changed into a prime (9152728411) 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, 66324051 + ... + 66324188.

It is an arithmetic number, because the mean of its divisors is an integer number (1591778880).

Almost surely, 2^9152728491 is an apocalyptic number.

9152728491 is a deficient number, since it is larger than the sum of its proper divisors (3581502549).

9152728491 is a wasteful number, since it uses less digits than its factorization.

9152728491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132648265.

The product of its digits is 362880, while the sum is 48.

The square root of 9152728491 is about 95669.8933364097. The cubic root of 9152728491 is about 2091.7841111377.

The spelling of 9152728491 in words is "nine billion, one hundred fifty-two million, seven hundred twenty-eight thousand, four hundred ninety-one".