1620327123 has 6 divisors (see below), whose sum is σ = 2340472524. Its totient is φ = 1080218076.

The previous prime is 1620327113. The next prime is 1620327173. The reversal of 1620327123 is 3217230261.

1620327123 is a `hidden beast` number, since 1 + 620 + 3 + 27 + 12 + 3 = 666.

It is not a de Polignac number, because 1620327123 - 2⁸ = 1620326867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1620327113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90018165 + ... + 90018182.

It is an arithmetic number, because the mean of its divisors is an integer number (390078754).

Almost surely, 2^1620327123 is an apocalyptic number.

1620327123 is a deficient number, since it is larger than the sum of its proper divisors (720145401).

1620327123 is a wasteful number, since it uses less digits than its factorization.

1620327123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180036353 (or 180036350 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1620327123 is about 40253.2871080114. The cubic root of 1620327123 is about 1174.5393390826.

Adding to 1620327123 its reverse (3217230261), we get a palindrome (4837557384).

The spelling of 1620327123 in words is "one billion, six hundred twenty million, three hundred twenty-seven thousand, one hundred twenty-three".