154108849489 has 9 divisors (see below), whose sum is σ = 179272674651. Its totient is φ = 132090944160.

The previous prime is 154108849483. The next prime is 154108849513. The reversal of 154108849489 is 984948801451.

The square root of 154108849489 is 392567.

It is a perfect power (a square), and thus also a powerful number.

154108849489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13963439889 + 140145409600 = 118167^2 + 374360^2 .

It is not a de Polignac number, because 154108849489 - 2¹⁹ = 154108325201 is a prime.

It is a super-2 number, since 2×154108849489² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154108849483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2719929 + ... + 2776009.

Almost surely, 2^154108849489 is an apocalyptic number.

154108849489 is the 392567-th square number.

154108849489 is the 196284-th centered octagonal number.

It is an amenable number.

154108849489 is a deficient number, since it is larger than the sum of its proper divisors (25163825162).

154108849489 is an frugal number, since it uses more digits than its factorization.

154108849489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112176 (or 56088 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 61.

The spelling of 154108849489 in words is "one hundred fifty-four billion, one hundred eight million, eight hundred forty-nine thousand, four hundred eighty-nine".