140177813 has 4 divisors (see below), whose sum is σ = 140220780. Its totient is φ = 140134848.

The previous prime is 140177777. The next prime is 140177831. The reversal of 140177813 is 318771041.

It is a happy number.

140177813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43784689 + 96393124 = 6617^2 + 9818^2 .

It is a cyclic number.

It is not a de Polignac number, because 140177813 - 2⁶ = 140177749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140177813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140177833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16148 + ... + 23261.

It is an arithmetic number, because the mean of its divisors is an integer number (35055195).

Almost surely, 2^140177813 is an apocalyptic number.

It is an amenable number.

140177813 is a deficient number, since it is larger than the sum of its proper divisors (42967).

140177813 is an equidigital number, since it uses as much as digits as its factorization.

140177813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42966.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 140177813 is about 11839.6711525278. The cubic root of 140177813 is about 519.4691488375.

The spelling of 140177813 in words is "one hundred forty million, one hundred seventy-seven thousand, eight hundred thirteen".