18345259628 has 6 divisors (see below), whose sum is σ = 32104204356. Its totient is φ = 9172629812.

The previous prime is 18345259613. The next prime is 18345259643. The reversal of 18345259628 is 82695254381.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18345259613) and next prime (18345259643).

It is a self number, because there is not a number n which added to its sum of digits gives 18345259628.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2293157450 + ... + 2293157457.

It is an arithmetic number, because the mean of its divisors is an integer number (5350700726).

Almost surely, 2^18345259628 is an apocalyptic number.

It is an amenable number.

18345259628 is a deficient number, since it is larger than the sum of its proper divisors (13758944728).

18345259628 is a wasteful number, since it uses less digits than its factorization.

18345259628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586314911 (or 4586314909 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 53.

The spelling of 18345259628 in words is "eighteen billion, three hundred forty-five million, two hundred fifty-nine thousand, six hundred twenty-eight".