149377813 has 8 divisors (see below), whose sum is σ = 162044568. Its totient is φ = 136879104.

The previous prime is 149377763. The next prime is 149377817. The reversal of 149377813 is 318773941.

149377813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 529 + 149377284 = 23^2 + 12222^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149377813 - 2⁹ = 149377301 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 149377813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149377817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40156 + ... + 43717.

It is an arithmetic number, because the mean of its divisors is an integer number (20255571).

Almost surely, 2^149377813 is an apocalyptic number.

149377813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

149377813 is a deficient number, since it is larger than the sum of its proper divisors (12666755).

149377813 is a wasteful number, since it uses less digits than its factorization.

149377813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84023.

The product of its digits is 127008, while the sum is 43.

The square root of 149377813 is about 12222.0216412834. The cubic root of 149377813 is about 530.5936305674.

The spelling of 149377813 in words is "one hundred forty-nine million, three hundred seventy-seven thousand, eight hundred thirteen".