920091830 has 16 divisors (see below), whose sum is σ = 1892760480. Its totient is φ = 315460032.

The previous prime is 920091829. The next prime is 920091841. The reversal of 920091830 is 38190029.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6572015 + ... + 6572154.

It is an arithmetic number, because the mean of its divisors is an integer number (118297530).

Almost surely, 2^920091830 is an apocalyptic number.

920091830 is an abundant number, since it is smaller than the sum of its proper divisors (972668650).

920091830 is a wasteful number, since it uses less digits than its factorization.

920091830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13144183.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 920091830 is about 30333.0155111555. The cubic root of 920091830 is about 972.6211848640.

It can be divided in two parts, 92009 and 1830, that added together give a palindrome (93839).

The spelling of 920091830 in words is "nine hundred twenty million, ninety-one thousand, eight hundred thirty".