140432818 has 16 divisors (see below), whose sum is σ = 223406424. Its totient is φ = 65977600.

The previous prime is 140432753. The next prime is 140432837. The reversal of 140432818 is 818234041.

It can be written as a sum of positive squares in 4 ways, for example, as 136118889 + 4313929 = 11667^2 + 2077^2 .

It is a super-2 number, since 2×140432818² = 39442752742842248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140432818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19968 + ... + 26068.

Almost surely, 2^140432818 is an apocalyptic number.

140432818 is a deficient number, since it is larger than the sum of its proper divisors (82973606).

140432818 is a wasteful number, since it uses less digits than its factorization.

140432818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6797.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 140432818 is about 11850.4353506527. The cubic root of 140432818 is about 519.7839561109.

Adding to 140432818 its reverse (818234041), we get a palindrome (958666859).

It can be divided in two parts, 14043 and 2818, that added together give a palindrome (16861).

The spelling of 140432818 in words is "one hundred forty million, four hundred thirty-two thousand, eight hundred eighteen".