149806805 has 32 divisors (see below), whose sum is σ = 195706368. Its totient is φ = 109670400.

The previous prime is 149806799. The next prime is 149806807. The reversal of 149806805 is 508608941.

It is not a de Polignac number, because 149806805 - 2¹⁰ = 149805781 is a prime.

It is a super-3 number, since 3×149806805³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149806807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621485 + ... + 621725.

It is an arithmetic number, because the mean of its divisors is an integer number (6115824).

Almost surely, 2^149806805 is an apocalyptic number.

It is an amenable number.

149806805 is a deficient number, since it is larger than the sum of its proper divisors (45899563).

149806805 is a wasteful number, since it uses less digits than its factorization.

149806805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 149806805 is about 12239.5590198340. The cubic root of 149806805 is about 531.1010751187.

The spelling of 149806805 in words is "one hundred forty-nine million, eight hundred six thousand, eight hundred five".