91000001030 has 32 divisors (see below), whose sum is σ = 169472874240. Its totient is φ = 35139726720.

The previous prime is 91000001017. The next prime is 91000001039. The reversal of 91000001030 is 3010000019.

It is a junction number, because it is equal to n+sod(n) for n = 91000000996 and 91000001014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91000001039) 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, 2435147 + ... + 2472233.

It is an arithmetic number, because the mean of its divisors is an integer number (5296027320).

Almost surely, 2^91000001030 is an apocalyptic number.

91000001030 is a deficient number, since it is larger than the sum of its proper divisors (78472873210).

91000001030 is a wasteful number, since it uses less digits than its factorization.

91000001030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45584.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 91000001030 its reverse (3010000019), we get a palindrome (94010001049).

The spelling of 91000001030 in words is "ninety-one billion, one thousand, thirty".