149945565 has 64 divisors (see below), whose sum is σ = 301086720. Its totient is φ = 61904640.

The previous prime is 149945563. The next prime is 149945581. The reversal of 149945565 is 565549941.

It is not a de Polignac number, because 149945565 - 2¹ = 149945563 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 (149945561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 227206 + ... + 227864.

It is an arithmetic number, because the mean of its divisors is an integer number (4704480).

Almost surely, 2^149945565 is an apocalyptic number.

149945565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149945565 is an abundant number, since it is smaller than the sum of its proper divisors (151141155).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149945565 is a wasteful number, since it uses less digits than its factorization.

149945565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882.

The product of its digits is 972000, while the sum is 48.

The square root of 149945565 is about 12245.2262126920. The cubic root of 149945565 is about 531.2650036824.

The spelling of 149945565 in words is "one hundred forty-nine million, nine hundred forty-five thousand, five hundred sixty-five".