149795515 has 4 divisors (see below), whose sum is σ = 179754624. Its totient is φ = 119836408.

The previous prime is 149795507. The next prime is 149795519. The reversal of 149795515 is 515597941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149795515 - 2³ = 149795507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149795519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14979547 + ... + 14979556.

It is an arithmetic number, because the mean of its divisors is an integer number (44938656).

Almost surely, 2^149795515 is an apocalyptic number.

149795515 is a deficient number, since it is larger than the sum of its proper divisors (29959109).

149795515 is an equidigital number, since it uses as much as digits as its factorization.

149795515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29959108.

The product of its digits is 283500, while the sum is 46.

The square root of 149795515 is about 12239.0978017172. The cubic root of 149795515 is about 531.0877328637.

It can be divided in two parts, 149 and 795515, that added together give a square (795664 = 892²).

The spelling of 149795515 in words is "one hundred forty-nine million, seven hundred ninety-five thousand, five hundred fifteen".