16191181842 has 32 divisors (see below), whose sum is σ = 35441328384. Its totient is φ = 4890430800.

The previous prime is 16191181819. The next prime is 16191181847. The reversal of 16191181842 is 24818119161.

It is a junction number, because it is equal to n+sod(n) for n = 16191181794 and 16191181803.

It is not an unprimeable number, because it can be changed into a prime (16191181847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379284 + ... + 419807.

It is an arithmetic number, because the mean of its divisors is an integer number (1107541512).

Almost surely, 2^16191181842 is an apocalyptic number.

16191181842 is an abundant number, since it is smaller than the sum of its proper divisors (19250146542).

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

16191181842 is a wasteful number, since it uses less digits than its factorization.

16191181842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799414.

The product of its digits is 27648, while the sum is 42.

The spelling of 16191181842 in words is "sixteen billion, one hundred ninety-one million, one hundred eighty-one thousand, eight hundred forty-two".