4185390403445 has 8 divisors (see below), whose sum is σ = 5072195895480. Its totient is φ = 3315160715200.

The previous prime is 4185390403343. The next prime is 4185390403463. The reversal of 4185390403445 is 5443040935814.

It can be written as a sum of positive squares in 4 ways, for example, as 1257434793316 + 2927955610129 = 1121354^2 + 1711127^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-4185390403445 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4185390403393 and 4185390403402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4143950390 + ... + 4143951399.

It is an arithmetic number, because the mean of its divisors is an integer number (634024486935).

Almost surely, 2^{4185390403445} is an apocalyptic number.

It is an amenable number.

4185390403445 is a deficient number, since it is larger than the sum of its proper divisors (886805492035).

4185390403445 is a wasteful number, since it uses less digits than its factorization.

4185390403445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8287901895.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 4185390403445 in words is "four trillion, one hundred eighty-five billion, three hundred ninety million, four hundred three thousand, four hundred forty-five".