149345685 has 12 divisors (see below), whose sum is σ = 258865932. Its totient is φ = 79651008.

The previous prime is 149345641. The next prime is 149345687. The reversal of 149345685 is 586543941.

It can be written as a sum of positive squares in 2 ways, for example, as 28323684 + 121022001 = 5322^2 + 11001^2 .

It is not a de Polignac number, because 149345685 - 2⁷ = 149345557 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3318793 = 149345685 / (1 + 4 + 9 + 3 + 4 + 5 + 6 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 149345685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149345687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1659352 + ... + 1659441.

It is an arithmetic number, because the mean of its divisors is an integer number (21572161).

Almost surely, 2^149345685 is an apocalyptic number.

149345685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149345685 is a deficient number, since it is larger than the sum of its proper divisors (109520247).

149345685 is a wasteful number, since it uses less digits than its factorization.

149345685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318804 (or 3318801 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 149345685 is about 12220.7072217609. The cubic root of 149345685 is about 530.5555880270. Note that the first 4 decimals are identical.

The spelling of 149345685 in words is "one hundred forty-nine million, three hundred forty-five thousand, six hundred eighty-five".