149503605 has 16 divisors (see below), whose sum is σ = 239466240. Its totient is φ = 79648448.

The previous prime is 149503603. The next prime is 149503621. The reversal of 149503605 is 506305941.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 149503605 - 2¹ = 149503603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149503603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10276 + ... + 20114.

It is an arithmetic number, because the mean of its divisors is an integer number (14966640).

Almost surely, 2^149503605 is an apocalyptic number.

149503605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149503605 is a deficient number, since it is larger than the sum of its proper divisors (89962635).

149503605 is a wasteful number, since it uses less digits than its factorization.

149503605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10860.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 149503605 is about 12227.1666791616. The cubic root of 149503605 is about 530.7425275290.

The spelling of 149503605 in words is "one hundred forty-nine million, five hundred three thousand, six hundred five".