154011508249 has 3 divisors (see below), whose sum is σ = 154011900693. Its totient is φ = 154011115806.

The previous prime is 154011508163. The next prime is 154011508309. The reversal of 154011508249 is 942805110451.

The square root of 154011508249 is 392443.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 942805110451 = 817321 ⋅1153531.

It is not a de Polignac number, because 154011508249 - 2⁹ = 154011507737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154011508349) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 196222 + ... + 588664.

It is an arithmetic number, because the mean of its divisors is an integer number (51337300231).

Almost surely, 2^154011508249 is an apocalyptic number.

154011508249 is the 392443-rd square number.

154011508249 is the 196222-nd centered octagonal number.

It is an amenable number.

154011508249 is a deficient number, since it is larger than the sum of its proper divisors (392444).

154011508249 is an frugal number, since it uses more digits than its factorization.

154011508249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784886 (or 392443 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 154011508249 in words is "one hundred fifty-four billion, eleven million, five hundred eight thousand, two hundred forty-nine".