546405638 has 4 divisors (see below), whose sum is σ = 819608460. Its totient is φ = 273202818.

The previous prime is 546405637. The next prime is 546405719. The reversal of 546405638 is 836504645.

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

It is a junction number, because it is equal to n+sod(n) for n = 546405595 and 546405604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (546405637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136601408 + ... + 136601411.

It is an arithmetic number, because the mean of its divisors is an integer number (204902115).

Almost surely, 2^546405638 is an apocalyptic number.

546405638 is a deficient number, since it is larger than the sum of its proper divisors (273202822).

546405638 is a wasteful number, since it uses less digits than its factorization.

546405638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273202821.

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 546405638 is about 23375.3211314839. The cubic root of 546405638 is about 817.5325579404.

The spelling of 546405638 in words is "five hundred forty-six million, four hundred five thousand, six hundred thirty-eight".