154291004060449 has 3 divisors (see below), whose sum is σ = 154291016481843. Its totient is φ = 154290991639056.

The previous prime is 154291004060381. The next prime is 154291004060489. The reversal of 154291004060449 is 944060400192451.

It is a happy number.

The square root of 154291004060449 is 12421393.

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.

It can be written as a sum of positive squares in only one way, i.e., 78729152973025 + 75561851087424 = 8872945^2 + 8692632^2 .

It is not a de Polignac number, because 154291004060449 - 2³³ = 154282414125857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154291004060489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6210697 + ... + 18632089.

It is an arithmetic number, because the mean of its divisors is an integer number (51430338827281).

Almost surely, 2^{154291004060449} is an apocalyptic number.

154291004060449 is the 12421393-rd square number.

154291004060449 is the 6210697-th centered octagonal number.

It is an amenable number.

154291004060449 is a deficient number, since it is larger than the sum of its proper divisors (12421394).

154291004060449 is an frugal number, since it uses more digits than its factorization.

154291004060449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24842786 (or 12421393 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 154291004060449 in words is "one hundred fifty-four trillion, two hundred ninety-one billion, four million, sixty thousand, four hundred forty-nine".