140865813 has 24 divisors (see below), whose sum is σ = 222412320. Its totient is φ = 85203360.

The previous prime is 140865799. The next prime is 140865817. The reversal of 140865813 is 318568041.

It is not a de Polignac number, because 140865813 - 2⁶ = 140865749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140865817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63558 + ... + 65736.

It is an arithmetic number, because the mean of its divisors is an integer number (9267180).

Almost surely, 2^140865813 is an apocalyptic number.

It is an amenable number.

140865813 is a deficient number, since it is larger than the sum of its proper divisors (81546507).

140865813 is a wasteful number, since it uses less digits than its factorization.

140865813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849 (or 2846 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 140865813 is about 11868.6904500876. The cubic root of 140865813 is about 520.3176227670.

The spelling of 140865813 in words is "one hundred forty million, eight hundred sixty-five thousand, eight hundred thirteen".