1630054123 has 4 divisors (see below), whose sum is σ = 1631690080. Its totient is φ = 1628418168.

The previous prime is 1630054117. The next prime is 1630054133. The reversal of 1630054123 is 3214500361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3214500361 = 109 ⋅29490829.

It is a cyclic number.

It is not a de Polignac number, because 1630054123 - 2¹⁷ = 1629923051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630054103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816483 + ... + 818476.

It is an arithmetic number, because the mean of its divisors is an integer number (407922520).

Almost surely, 2^1630054123 is an apocalyptic number.

1630054123 is a deficient number, since it is larger than the sum of its proper divisors (1635957).

1630054123 is an equidigital number, since it uses as much as digits as its factorization.

1630054123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635956.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1630054123 is about 40373.9287535905. The cubic root of 1630054123 is about 1176.8849474893.

Adding to 1630054123 its reverse (3214500361), we get a palindrome (4844554484).

The spelling of 1630054123 in words is "one billion, six hundred thirty million, fifty-four thousand, one hundred twenty-three".