1623898998 has 48 divisors (see below), whose sum is σ = 3558578400. Its totient is φ = 535161600.

The previous prime is 1623898987. The next prime is 1623899003. The reversal of 1623898998 is 8998983261.

1623898998 is a `hidden beast` number, since 162 + 389 + 8 + 9 + 98 = 666.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 621118 + ... + 623726.

It is an arithmetic number, because the mean of its divisors is an integer number (74137050).

Almost surely, 2^1623898998 is an apocalyptic number.

1623898998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1623898998 is an abundant number, since it is smaller than the sum of its proper divisors (1934679402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1623898998 is a wasteful number, since it uses less digits than its factorization.

1623898998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997 (or 2994 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 63.

The square root of 1623898998 is about 40297.6301784609. The cubic root of 1623898998 is about 1175.4017634408.

The spelling of 1623898998 in words is "one billion, six hundred twenty-three million, eight hundred ninety-eight thousand, nine hundred ninety-eight".