9885854155 has 24 divisors (see below), whose sum is σ = 12254100768. Its totient is φ = 7655590656.

The previous prime is 9885854149. The next prime is 9885854159. The reversal of 9885854155 is 5514585889.

It is not a de Polignac number, because 9885854155 - 2¹¹ = 9885852107 is a prime.

It is a super-2 number, since 2×9885854155² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9885854155.

It is not an unprimeable number, because it can be changed into a prime (9885854159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1039954 + ... + 1049416.

It is an arithmetic number, because the mean of its divisors is an integer number (510587532).

Almost surely, 2^9885854155 is an apocalyptic number.

9885854155 is a deficient number, since it is larger than the sum of its proper divisors (2368246613).

9885854155 is a wasteful number, since it uses less digits than its factorization.

9885854155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9667 (or 9624 counting only the distinct ones).

The product of its digits is 11520000, while the sum is 58.

The square root of 9885854155 is about 99427.6327536767. The cubic root of 9885854155 is about 2146.2059754317.

The spelling of 9885854155 in words is "nine billion, eight hundred eighty-five million, eight hundred fifty-four thousand, one hundred fifty-five".