16181191642 has 16 divisors (see below), whose sum is σ = 30260930112. Its totient is φ = 6304360320.

The previous prime is 16181191639. The next prime is 16181191661. The reversal of 16181191642 is 24619118161.

It is a junction number, because it is equal to n+sod(n) for n = 16181191595 and 16181191604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52536183 + ... + 52536490.

It is an arithmetic number, because the mean of its divisors is an integer number (1891308132).

Almost surely, 2^16181191642 is an apocalyptic number.

16181191642 is a deficient number, since it is larger than the sum of its proper divisors (14079738470).

16181191642 is a wasteful number, since it uses less digits than its factorization.

16181191642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105072693.

The product of its digits is 20736, while the sum is 40.

The spelling of 16181191642 in words is "sixteen billion, one hundred eighty-one million, one hundred ninety-one thousand, six hundred forty-two".