1090643347 has 4 divisors (see below), whose sum is σ = 1154798856. Its totient is φ = 1026487840.

The previous prime is 1090643329. The next prime is 1090643383. The reversal of 1090643347 is 7433460901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1090643347 - 2²³ = 1082254739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1090643317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32077729 + ... + 32077762.

It is an arithmetic number, because the mean of its divisors is an integer number (288699714).

Almost surely, 2^1090643347 is an apocalyptic number.

1090643347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1090643347 is a deficient number, since it is larger than the sum of its proper divisors (64155509).

1090643347 is an equidigital number, since it uses as much as digits as its factorization.

1090643347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64155508.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 1090643347 is about 33024.8898105656. The cubic root of 1090643347 is about 1029.3449025039.

The spelling of 1090643347 in words is "one billion, ninety million, six hundred forty-three thousand, three hundred forty-seven".