1001922409 has 8 divisors (see below), whose sum is σ = 1012884488. Its totient is φ = 990973440.

The previous prime is 1001922401. The next prime is 1001922413. The reversal of 1001922409 is 9042291001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 416282409 + 585640000 = 20403^2 + 24200^2 .

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 1001922409 - 2³ = 1001922401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001922401) 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, 281179 + ... + 284719.

It is an arithmetic number, because the mean of its divisors is an integer number (126610561).

Almost surely, 2^1001922409 is an apocalyptic number.

It is an amenable number.

1001922409 is a deficient number, since it is larger than the sum of its proper divisors (10962079).

1001922409 is an equidigital number, since it uses as much as digits as its factorization.

1001922409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1001922409 is about 31653.1579625162. The cubic root of 1001922409 is about 1000.6403928095.

The spelling of 1001922409 in words is "one billion, one million, nine hundred twenty-two thousand, four hundred nine".