1154038844644 has 27 divisors (see below), whose sum is σ = 2349323979177. Its totient is φ = 494581630704.

The previous prime is 1154038844633. The next prime is 1154038844653. The reversal of 1154038844644 is 4464488304511.

It is a happy number.

The square root of 1154038844644 is 1074262.

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

It can be written as a sum of positive squares in only one way, i.e., 1153798222500 + 240622144 = 1074150^2 + 15512^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1154038844591 and 1154038844600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15001302 + ... + 15078034.

Almost surely, 2^{1154038844644} is an apocalyptic number.

1154038844644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1154038844644 is the 1074262-nd square number.

It is an amenable number.

1154038844644 is an abundant number, since it is smaller than the sum of its proper divisors (1195285134533).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154038844644 is an frugal number, since it uses more digits than its factorization.

1154038844644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153484 (or 76742 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 52.

The spelling of 1154038844644 in words is "one trillion, one hundred fifty-four billion, thirty-eight million, eight hundred forty-four thousand, six hundred forty-four".