1623332013 has 16 divisors (see below), whose sum is σ = 2326840320. Its totient is φ = 1003446576.

The previous prime is 1623331999. The next prime is 1623332059. The reversal of 1623332013 is 3102333261.

It is a happy number.

It is not a de Polignac number, because 1623332013 - 2⁸ = 1623331757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623332713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300295 + ... + 305652.

It is an arithmetic number, because the mean of its divisors is an integer number (145427520).

Almost surely, 2^1623332013 is an apocalyptic number.

It is an amenable number.

1623332013 is a deficient number, since it is larger than the sum of its proper divisors (703508307).

1623332013 is a wasteful number, since it uses less digits than its factorization.

1623332013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606016.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 1623332013 is about 40290.5945972506. The cubic root of 1623332013 is about 1175.2649501811.

Adding to 1623332013 its reverse (3102333261), we get a palindrome (4725665274).

The spelling of 1623332013 in words is "one billion, six hundred twenty-three million, three hundred thirty-two thousand, thirteen".