41642689818 has 32 divisors (see below), whose sum is σ = 85889963520. Its totient is φ = 13453427120.

The previous prime is 41642689807. The next prime is 41642689831. The reversal of 41642689818 is 81898624614.

It is a happy number.

It is a super-2 number, since 2×41642689818² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803280 + ... + 853547.

It is an arithmetic number, because the mean of its divisors is an integer number (2684061360).

Almost surely, 2^41642689818 is an apocalyptic number.

41642689818 is an abundant number, since it is smaller than the sum of its proper divisors (44247273702).

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

41642689818 is a wasteful number, since it uses less digits than its factorization.

41642689818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656962.

The product of its digits is 5308416, while the sum is 57.

The spelling of 41642689818 in words is "forty-one billion, six hundred forty-two million, six hundred eighty-nine thousand, eight hundred eighteen".