1091423841 has 8 divisors (see below), whose sum is σ = 1455497280. Its totient is φ = 727483152.

The previous prime is 1091423833. The next prime is 1091423849. The reversal of 1091423841 is 1483241901.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1091423833) and next prime (1091423849).

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

It is not a de Polignac number, because 1091423841 - 2³ = 1091423833 is a prime.

It is a super-4 number, since 4×1091423841⁴ (a number of 37 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1091423849) 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 7 ways as a sum of consecutive naturals, for example, 12085 + ... + 48258.

It is an arithmetic number, because the mean of its divisors is an integer number (181937160).

Almost surely, 2^1091423841 is an apocalyptic number.

It is an amenable number.

1091423841 is a deficient number, since it is larger than the sum of its proper divisors (364073439).

1091423841 is an equidigital number, since it uses as much as digits as its factorization.

1091423841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66375.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1091423841 is about 33036.7044512615. The cubic root of 1091423841 is about 1029.5903863444.

The spelling of 1091423841 in words is "one billion, ninety-one million, four hundred twenty-three thousand, eight hundred forty-one".