9028010861 has 4 divisors (see below), whose sum is σ = 9028312992. Its totient is φ = 9027708732.

The previous prime is 9028010857. The next prime is 9028010881. The reversal of 9028010861 is 1680108209.

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.

It is a cyclic number.

It is not a de Polignac number, because 9028010861 - 2² = 9028010857 is a prime.

It is a super-2 number, since 2×9028010861² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9028010821) 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, 100631 + ... + 167876.

It is an arithmetic number, because the mean of its divisors is an integer number (2257078248).

Almost surely, 2^9028010861 is an apocalyptic number.

It is an amenable number.

9028010861 is a deficient number, since it is larger than the sum of its proper divisors (302131).

9028010861 is a wasteful number, since it uses less digits than its factorization.

9028010861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302130.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 9028010861 is about 95015.8453153999. The cubic root of 9028010861 is about 2082.2395488592.

The spelling of 9028010861 in words is "nine billion, twenty-eight million, ten thousand, eight hundred sixty-one".