901001011 has 4 divisors (see below), whose sum is σ = 940174992. Its totient is φ = 861827032.

The previous prime is 901000999. The next prime is 901001027. The reversal of 901001011 is 110100109.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-901001011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 901000982 and 901001000.

It is not an unprimeable number, because it can be changed into a prime (901001041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19586956 + ... + 19587001.

It is an arithmetic number, because the mean of its divisors is an integer number (235043748).

Almost surely, 2^901001011 is an apocalyptic number.

901001011 is a deficient number, since it is larger than the sum of its proper divisors (39173981).

901001011 is a wasteful number, since it uses less digits than its factorization.

901001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39173980.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 901001011 is about 30016.6788802492. The cubic root of 901001011 is about 965.8472021625.

The spelling of 901001011 in words is "nine hundred one million, one thousand, eleven".