1089871002 has 48 divisors (see below), whose sum is σ = 2601612000. Its totient is φ = 326988000.

The previous prime is 1089870997. The next prime is 1089871007. The reversal of 1089871002 is 2001789801.

It is an interprime number because it is at equal distance from previous prime (1089870997) and next prime (1089871007).

It is not an unprimeable number, because it can be changed into a prime (1089871007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7252 + ... + 47247.

It is an arithmetic number, because the mean of its divisors is an integer number (54200250).

Almost surely, 2^1089871002 is an apocalyptic number.

1089871002 is an abundant number, since it is smaller than the sum of its proper divisors (1511740998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089871002 is a wasteful number, since it uses less digits than its factorization.

1089871002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54619 (or 54616 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 1089871002 is about 33013.1943622546. The cubic root of 1089871002 is about 1029.1018664011.

The spelling of 1089871002 in words is "one billion, eighty-nine million, eight hundred seventy-one thousand, two".