1623352001 has 4 divisors (see below), whose sum is σ = 1708791600. Its totient is φ = 1537912404.

The previous prime is 1623351971. The next prime is 1623352009. The reversal of 1623352001 is 1002533261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1623352001 - 2¹⁸ = 1623089857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1623352009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42719771 + ... + 42719808.

It is an arithmetic number, because the mean of its divisors is an integer number (427197900).

Almost surely, 2^1623352001 is an apocalyptic number.

It is an amenable number.

1623352001 is a deficient number, since it is larger than the sum of its proper divisors (85439599).

1623352001 is an equidigital number, since it uses as much as digits as its factorization.

1623352001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85439598.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1623352001 is about 40290.8426444521. The cubic root of 1623352001 is about 1175.2697738194.

Adding to 1623352001 its reverse (1002533261), we get a palindrome (2625885262).

The spelling of 1623352001 in words is "one billion, six hundred twenty-three million, three hundred fifty-two thousand, one".