9091020001 has 16 divisors (see below), whose sum is σ = 10433719296. Its totient is φ = 7759369296.

The previous prime is 9091019989. The next prime is 9091020007. The reversal of 9091020001 is 1000201909.

It is not a de Polignac number, because 9091020001 - 2⁹ = 9091019489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9091020007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4354980 + ... + 4357066.

It is an arithmetic number, because the mean of its divisors is an integer number (652107456).

Almost surely, 2^9091020001 is an apocalyptic number.

It is an amenable number.

9091020001 is a deficient number, since it is larger than the sum of its proper divisors (1342699295).

9091020001 is a wasteful number, since it uses less digits than its factorization.

9091020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 9091020001 is about 95346.8405402088. The cubic root of 9091020001 is about 2087.0725098589.

The spelling of 9091020001 in words is "nine billion, ninety-one million, twenty thousand, one".