545071638 has 8 divisors (see below), whose sum is σ = 1090143288. Its totient is φ = 181690544.

The previous prime is 545071621. The next prime is 545071691. The reversal of 545071638 is 836170545.

It is a sphenic number, since it is the product of 3 distinct primes.

545071638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 545071596 and 545071605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45422631 + ... + 45422642.

It is an arithmetic number, because the mean of its divisors is an integer number (136267911).

Almost surely, 2^545071638 is an apocalyptic number.

545071638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

545071638 is a wasteful number, since it uses less digits than its factorization.

545071638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90845278.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 545071638 is about 23346.7693268255. The cubic root of 545071638 is about 816.8667051463.

The spelling of 545071638 in words is "five hundred forty-five million, seventy-one thousand, six hundred thirty-eight".