154014647809 has 9 divisors (see below), whose sum is σ = 169293572931. Its totient is φ = 140009391720.

The previous prime is 154014647797. The next prime is 154014647827. The reversal of 154014647809 is 908746410451.

The square root of 154014647809 is 392447.

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

154014647809 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., 107777607025 + 46237040784 = 328295^2 + 215028^2 .

It is a de Polignac number, because none of the positive numbers 2^k-154014647809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154014647869) 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, 4299079 + ... + 4334755.

Almost surely, 2^154014647809 is an apocalyptic number.

154014647809 is the 392447-th square number.

154014647809 is the 196224-th centered octagonal number.

It is an amenable number.

154014647809 is a deficient number, since it is larger than the sum of its proper divisors (15278925122).

154014647809 is an frugal number, since it uses more digits than its factorization.

154014647809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71376 (or 35688 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

Multiplying 154014647809 by its sum of digits (49), we get a square (7546717742641 = 2747129²).

The spelling of 154014647809 in words is "one hundred fifty-four billion, fourteen million, six hundred forty-seven thousand, eight hundred nine".