4185691642 has 32 divisors (see below), whose sum is σ = 6987622464. Its totient is φ = 1864262400.

The previous prime is 4185691619. The next prime is 4185691651. The reversal of 4185691642 is 2461965814.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4185691592 and 4185691601.

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, 1130338 + ... + 1134034.

It is an arithmetic number, because the mean of its divisors is an integer number (218363202).

Almost surely, 2^4185691642 is an apocalyptic number.

4185691642 is a deficient number, since it is larger than the sum of its proper divisors (2801930822).

4185691642 is a wasteful number, since it uses less digits than its factorization.

4185691642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734.

The product of its digits is 414720, while the sum is 46.

The square root of 4185691642 is about 64696.9214259844. The cubic root of 4185691642 is about 1611.5943777750.

The spelling of 4185691642 in words is "four billion, one hundred eighty-five million, six hundred ninety-one thousand, six hundred forty-two".