140802806169 has 45 divisors (see below), whose sum is σ = 212439369549. Its totient is φ = 92938700160.

The previous prime is 140802806161. The next prime is 140802806227. The reversal of 140802806169 is 961608208041.

The square root of 140802806169 is 375237.

It is a perfect power (a square), and thus also a powerful number.

140802806169 is a `hidden beast` number, since 1 + 4 + 0 + 8 + 0 + 28 + 0 + 616 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 64620182025 + 76182624144 = 254205^2 + 276012^2 .

It is not a de Polignac number, because 140802806169 - 2³ = 140802806161 is a prime.

It is a super-2 number, since 2×140802806169² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140802806161) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 584243889 + ... + 584244129.

Almost surely, 2^140802806169 is an apocalyptic number.

140802806169 is the 375237-th square number.

140802806169 is the 187619-th centered octagonal number.

It is an amenable number.

140802806169 is a deficient number, since it is larger than the sum of its proper divisors (71636563380).

140802806169 is an frugal number, since it uses more digits than its factorization.

140802806169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 140802806169 in words is "one hundred forty billion, eight hundred two million, eight hundred six thousand, one hundred sixty-nine".