541778789 has 4 divisors (see below), whose sum is σ = 545366880. Its totient is φ = 538190700.

The previous prime is 541778779. The next prime is 541778791. The reversal of 541778789 is 987877145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541778789 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 (541778719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1793819 + ... + 1794120.

It is an arithmetic number, because the mean of its divisors is an integer number (136341720).

Almost surely, 2^541778789 is an apocalyptic number.

It is an amenable number.

541778789 is a deficient number, since it is larger than the sum of its proper divisors (3588091).

541778789 is a wasteful number, since it uses less digits than its factorization.

541778789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588090.

The product of its digits is 3951360, while the sum is 56.

The square root of 541778789 is about 23276.1420557617. The cubic root of 541778789 is about 815.2184487257.

The spelling of 541778789 in words is "five hundred forty-one million, seven hundred seventy-eight thousand, seven hundred eighty-nine".