8906121851 has 8 divisors (see below), whose sum is σ = 9720772608. Its totient is φ = 8092305000.

The previous prime is 8906121793. The next prime is 8906121863. The reversal of 8906121851 is 1581216098.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8906121851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8906121799 and 8906121808.

It is not an unprimeable number, because it can be changed into a prime (8906121881) 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, 186035 + ... + 228956.

It is an arithmetic number, because the mean of its divisors is an integer number (1215096576).

Almost surely, 2^8906121851 is an apocalyptic number.

8906121851 is a deficient number, since it is larger than the sum of its proper divisors (814650757).

8906121851 is a wasteful number, since it uses less digits than its factorization.

8906121851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416953.

The product of its (nonzero) digits is 34560, while the sum is 41.

The square root of 8906121851 is about 94372.2514884540. The cubic root of 8906121851 is about 2072.8261436371.

The spelling of 8906121851 in words is "eight billion, nine hundred six million, one hundred twenty-one thousand, eight hundred fifty-one".