154061869 has 4 divisors (see below), whose sum is σ = 165912796. Its totient is φ = 142210944.

The previous prime is 154061867. The next prime is 154061879. The reversal of 154061869 is 968160451.

154061869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16281225 + 137780644 = 4035^2 + 11738^2 .

It is a cyclic number.

It is not a de Polignac number, because 154061869 - 2¹ = 154061867 is a prime.

It is a super-2 number, since 2×154061869² = 47470118959546322, which contains 22 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 (154061867) 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, 5925444 + ... + 5925469.

It is an arithmetic number, because the mean of its divisors is an integer number (41478199).

Almost surely, 2^154061869 is an apocalyptic number.

It is an amenable number.

154061869 is a deficient number, since it is larger than the sum of its proper divisors (11850927).

154061869 is a wasteful number, since it uses less digits than its factorization.

154061869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11850926.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 154061869 is about 12412.1661687233. The cubic root of 154061869 is about 536.0826116912.

The spelling of 154061869 in words is "one hundred fifty-four million, sixty-one thousand, eight hundred sixty-nine".