91690130 has 48 divisors (see below), whose sum is σ = 193112640. Its totient is φ = 30696384.

The previous prime is 91690097. The next prime is 91690133. The reversal of 91690130 is 3109619.

It is a junction number, because it is equal to n+sod(n) for n = 91690093 and 91690102.

It is not an unprimeable number, because it can be changed into a prime (91690133) 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 23 ways as a sum of consecutive naturals, for example, 615296 + ... + 615444.

It is an arithmetic number, because the mean of its divisors is an integer number (4023180).

Almost surely, 2^91690130 is an apocalyptic number.

91690130 is an abundant number, since it is smaller than the sum of its proper divisors (101422510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91690130 is a wasteful number, since it uses less digits than its factorization.

91690130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 91690130 is about 9575.4963317835. The cubic root of 91690130 is about 450.9283386877.

Adding to 91690130 its reverse (3109619), we get a palindrome (94799749).

The spelling of 91690130 in words is "ninety-one million, six hundred ninety thousand, one hundred thirty".