91009292830 has 16 divisors (see below), whose sum is σ = 163820289024. Its totient is φ = 36402925600.

The previous prime is 91009292819. The next prime is 91009292831. The reversal of 91009292830 is 3829290019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91009292831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664419 + ... + 789601.

It is an arithmetic number, because the mean of its divisors is an integer number (10238768064).

Almost surely, 2^91009292830 is an apocalyptic number.

91009292830 is a deficient number, since it is larger than the sum of its proper divisors (72810996194).

91009292830 is a wasteful number, since it uses less digits than its factorization.

91009292830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197891.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 91009292830 in words is "ninety-one billion, nine million, two hundred ninety-two thousand, eight hundred thirty".