1009091923 has 8 divisors (see below), whose sum is σ = 1153719392. Its totient is φ = 864582336.

The previous prime is 1009091911. The next prime is 1009091971. The reversal of 1009091923 is 3291909001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009091923 - 2¹³ = 1009083731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1009092923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10290 + ... + 46087.

It is an arithmetic number, because the mean of its divisors is an integer number (144214924).

Almost surely, 2^1009091923 is an apocalyptic number.

1009091923 is a deficient number, since it is larger than the sum of its proper divisors (144627469).

1009091923 is an equidigital number, since it uses as much as digits as its factorization.

1009091923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58941.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 1009091923 is about 31766.2072492137. The cubic root of 1009091923 is about 1003.0215023288.

The spelling of 1009091923 in words is "one billion, nine million, ninety-one thousand, nine hundred twenty-three".