149642386 has 16 divisors (see below), whose sum is σ = 226361304. Its totient is φ = 74191744.

The previous prime is 149642377. The next prime is 149642387. The reversal of 149642386 is 683246941.

It is a happy number.

149642386 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 20115225 + 129527161 = 4485^2 + 11381^2 .

It is not an unprimeable number, because it can be changed into a prime (149642387) 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, 147216 + ... + 148228.

Almost surely, 2^149642386 is an apocalyptic number.

149642386 is a deficient number, since it is larger than the sum of its proper divisors (76718918).

149642386 is a wasteful number, since it uses less digits than its factorization.

149642386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565.

The product of its digits is 248832, while the sum is 43.

The square root of 149642386 is about 12232.8404714522. The cubic root of 149642386 is about 530.9067023863.

The spelling of 149642386 in words is "one hundred forty-nine million, six hundred forty-two thousand, three hundred eighty-six".