149723786 has 16 divisors (see below), whose sum is σ = 226310760. Its totient is φ = 74289600.

The previous prime is 149723779. The next prime is 149723789. The reversal of 149723786 is 687327941.

149723786 is digitally balanced in base 3, 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 130530625 + 19193161 = 11425^2 + 4381^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 149723786.

It is not an unprimeable number, because it can be changed into a prime (149723789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213236 + ... + 213936.

Almost surely, 2^149723786 is an apocalyptic number.

149723786 is a deficient number, since it is larger than the sum of its proper divisors (76586974).

149723786 is a wasteful number, since it uses less digits than its factorization.

149723786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its digits is 508032, while the sum is 47.

The square root of 149723786 is about 12236.1671286396. The cubic root of 149723786 is about 531.0029495641.

The spelling of 149723786 in words is "one hundred forty-nine million, seven hundred twenty-three thousand, seven hundred eighty-six".