1623316545 has 48 divisors (see below), whose sum is σ = 2923240320. Its totient is φ = 864203904.

The previous prime is 1623316493. The next prime is 1623316559. The reversal of 1623316545 is 5456133261.

It is not a de Polignac number, because 1623316545 - 2⁶ = 1623316481 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1040476 + ... + 1042034.

It is an arithmetic number, because the mean of its divisors is an integer number (60900840).

Almost surely, 2^1623316545 is an apocalyptic number.

1623316545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1623316545 is a deficient number, since it is larger than the sum of its proper divisors (1299923775).

1623316545 is an equidigital number, since it uses as much as digits as its factorization.

1623316545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436 (or 2424 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 1623316545 is about 40290.4026413239. The cubic root of 1623316545 is about 1175.2612173124.

The spelling of 1623316545 in words is "one billion, six hundred twenty-three million, three hundred sixteen thousand, five hundred forty-five".