1154403493 has 4 divisors (see below), whose sum is σ = 1194210540. Its totient is φ = 1114596448.

The previous prime is 1154403473. The next prime is 1154403517. The reversal of 1154403493 is 3943044511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 638977284 + 515426209 = 25278^2 + 22703^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154403493 - 2⁵ = 1154403461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154403403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19903480 + ... + 19903537.

It is an arithmetic number, because the mean of its divisors is an integer number (298552635).

Almost surely, 2^1154403493 is an apocalyptic number.

It is an amenable number.

1154403493 is a deficient number, since it is larger than the sum of its proper divisors (39807047).

1154403493 is an equidigital number, since it uses as much as digits as its factorization.

1154403493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39807046.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1154403493 is about 33976.5138441247. The cubic root of 1154403493 is about 1049.0250944938.

The spelling of 1154403493 in words is "one billion, one hundred fifty-four million, four hundred three thousand, four hundred ninety-three".