4351663642 has 16 divisors (see below), whose sum is σ = 6562752840. Its totient is φ = 2164099392.

The previous prime is 4351663637. The next prime is 4351663681. The reversal of 4351663642 is 2463661534.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4324509121 + 27154521 = 65761^2 + 5211^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4351663595 and 4351663604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496248 + ... + 504940.

Almost surely, 2^4351663642 is an apocalyptic number.

4351663642 is a deficient number, since it is larger than the sum of its proper divisors (2211089198).

4351663642 is a wasteful number, since it uses less digits than its factorization.

4351663642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10017.

The product of its digits is 311040, while the sum is 40.

The square root of 4351663642 is about 65967.1406231921. The cubic root of 4351663642 is about 1632.6199778773.

The spelling of 4351663642 in words is "four billion, three hundred fifty-one million, six hundred sixty-three thousand, six hundred forty-two".