1091000002 has 8 divisors (see below), whose sum is σ = 1671319296. Its totient is φ = 533893572.

The previous prime is 1090999997. The next prime is 1091000017. The reversal of 1091000002 is 2000001901.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5803098 + ... + 5803285.

It is an arithmetic number, because the mean of its divisors is an integer number (208914912).

Almost surely, 2^1091000002 is an apocalyptic number.

1091000002 is a deficient number, since it is larger than the sum of its proper divisors (580319294).

1091000002 is a wasteful number, since it uses less digits than its factorization.

1091000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11606432.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1091000002 is about 33030.2891601027. The cubic root of 1091000002 is about 1029.4570934710.

Adding to 1091000002 its reverse (2000001901), we get a palindrome (3091001903).

The spelling of 1091000002 in words is "one billion, ninety-one million, two", and thus it is an aban number and an uban number.