1009091010 has 32 divisors (see below), whose sum is σ = 2487275712. Its totient is φ = 261817920.

The previous prime is 1009091003. The next prime is 1009091021. The reversal of 1009091010 is 101909001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453436 + ... + 455655.

It is an arithmetic number, because the mean of its divisors is an integer number (77727366).

Almost surely, 2^1009091010 is an apocalyptic number.

1009091010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1009091010 is an abundant number, since it is smaller than the sum of its proper divisors (1478184702).

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

1009091010 is a wasteful number, since it uses less digits than its factorization.

1009091010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909138.

The product of its (nonzero) digits is 81, while the sum is 21.

The square root of 1009091010 is about 31766.1928785934. The cubic root of 1009091010 is about 1003.0211998261.

The spelling of 1009091010 in words is "one billion, nine million, ninety-one thousand, ten".