150018697 has 4 divisors (see below), whose sum is σ = 150448900. Its totient is φ = 149588496.

The previous prime is 150018643. The next prime is 150018721. The reversal of 150018697 is 796810051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796810051 = 1123 ⋅709537.

It can be written as a sum of positive squares in 2 ways, for example, as 118613881 + 31404816 = 10891^2 + 5604^2 .

It is a cyclic number.

It is not a de Polignac number, because 150018697 - 2¹⁹ = 149494409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150018997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214578 + ... + 215275.

It is an arithmetic number, because the mean of its divisors is an integer number (37612225).

Almost surely, 2^150018697 is an apocalyptic number.

It is an amenable number.

150018697 is a deficient number, since it is larger than the sum of its proper divisors (430203).

150018697 is an equidigital number, since it uses as much as digits as its factorization.

150018697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430202.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 150018697 is about 12248.2119919603. The cubic root of 150018697 is about 531.3513598155.

The spelling of 150018697 in words is "one hundred fifty million, eighteen thousand, six hundred ninety-seven".