91148369 has 16 divisors (see below), whose sum is σ = 100826880. Its totient is φ = 81872640.

The previous prime is 91148329. The next prime is 91148389. The reversal of 91148369 is 96384119.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91148369 is a prime.

It is a super-2 number, since 2×91148369² = 16616050342720322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91148329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146942 + ... + 147560.

It is an arithmetic number, because the mean of its divisors is an integer number (6301680).

Almost surely, 2^91148369 is an apocalyptic number.

It is an amenable number.

91148369 is a deficient number, since it is larger than the sum of its proper divisors (9678511).

91148369 is a wasteful number, since it uses less digits than its factorization.

91148369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its digits is 46656, while the sum is 41.

The square root of 91148369 is about 9547.1654955804. The cubic root of 91148369 is about 450.0384642019.

The spelling of 91148369 in words is "ninety-one million, one hundred forty-eight thousand, three hundred sixty-nine".