1009901011 has 8 divisors (see below), whose sum is σ = 1154365184. Its totient is φ = 865485000.

The previous prime is 1009900979. The next prime is 1009901021. The reversal of 1009901011 is 1101099001.

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

It is a cyclic number.

It is not a de Polignac number, because 1009901011 - 2⁵ = 1009900979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1009901021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72346 + ... + 85168.

It is an arithmetic number, because the mean of its divisors is an integer number (144295648).

Almost surely, 2^1009901011 is an apocalyptic number.

1009901011 is a deficient number, since it is larger than the sum of its proper divisors (144464173).

1009901011 is a wasteful number, since it uses less digits than its factorization.

1009901011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24081.

The product of its (nonzero) digits is 81, while the sum is 22.

The square root of 1009901011 is about 31778.9397400228. The cubic root of 1009901011 is about 1003.2895042964.

The spelling of 1009901011 in words is "one billion, nine million, nine hundred one thousand, eleven".