1153654290889 has 3 divisors (see below), whose sum is σ = 1153655364973. Its totient is φ = 1153653216806.

The previous prime is 1153654290883. The next prime is 1153654290913. The reversal of 1153654290889 is 9880924563511.

The square root of 1153654290889 is 1074083.

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 is not a de Polignac number, because 1153654290889 - 2³ = 1153654290881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153654290881) 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, 537042 + ... + 1611124.

Almost surely, 2^{1153654290889} is an apocalyptic number.

1153654290889 is the 1074083-rd square number.

1153654290889 is the 537042-nd centered octagonal number.

It is an amenable number.

1153654290889 is a deficient number, since it is larger than the sum of its proper divisors (1074084).

1153654290889 is an frugal number, since it uses more digits than its factorization.

1153654290889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148166 (or 1074083 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 1153654290889 in words is "one trillion, one hundred fifty-three billion, six hundred fifty-four million, two hundred ninety thousand, eight hundred eighty-nine".