1009101901 has 4 divisors (see below), whose sum is σ = 1009251072. Its totient is φ = 1008952732.

The previous prime is 1009101889. The next prime is 1009101917. The reversal of 1009101901 is 1091019001.

1009101901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1091019001 = 1381 ⋅790021.

It is a cyclic number.

It is not a de Polignac number, because 1009101901 - 2⁵ = 1009101869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009101991) 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, 63931 + ... + 78136.

It is an arithmetic number, because the mean of its divisors is an integer number (252312768).

Almost surely, 2^1009101901 is an apocalyptic number.

It is an amenable number.

1009101901 is a deficient number, since it is larger than the sum of its proper divisors (149171).

1009101901 is an equidigital number, since it uses as much as digits as its factorization.

1009101901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149170.

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

The square root of 1009101901 is about 31766.3643025134. The cubic root of 1009101901 is about 1003.0248083096.

The spelling of 1009101901 in words is "one billion, nine million, one hundred one thousand, nine hundred one".