8871561942 has 16 divisors (see below), whose sum is σ = 18155755200. Its totient is φ = 2888415432.

The previous prime is 8871561929. The next prime is 8871561973. The reversal of 8871561942 is 2491651788.

It is a super-2 number, since 2×8871561942² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17192692 + ... + 17193207.

It is an arithmetic number, because the mean of its divisors is an integer number (1134734700).

Almost surely, 2^8871561942 is an apocalyptic number.

8871561942 is an abundant number, since it is smaller than the sum of its proper divisors (9284193258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8871561942 is a wasteful number, since it uses less digits than its factorization.

8871561942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34385947.

The product of its digits is 967680, while the sum is 51.

The square root of 8871561942 is about 94188.9693223150. The cubic root of 8871561942 is about 2070.1414904802.

The spelling of 8871561942 in words is "eight billion, eight hundred seventy-one million, five hundred sixty-one thousand, nine hundred forty-two".