718149 has 4 divisors (see below), whose sum is σ = 957536. Its totient is φ = 478764.

The previous prime is 718139. The next prime is 718163. The reversal of 718149 is 941817.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 718149 - 2¹³ = 709957 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119689 + ... + 119694.

It is an arithmetic number, because the mean of its divisors is an integer number (239384).

2⁷¹⁸¹⁴⁹ is an apocalyptic number.

It is an amenable number.

718149 is a deficient number, since it is larger than the sum of its proper divisors (239387).

718149 is a wasteful number, since it uses less digits than its factorization.

718149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239386.

The product of its digits is 2016, while the sum is 30.

The square root of 718149 is about 847.4367233015. The cubic root of 718149 is about 89.5512227202.

The spelling of 718149 in words is "seven hundred eighteen thousand, one hundred forty-nine".