1623838949880 has 64 divisors (see below), whose sum is σ = 5567447831040. Its totient is φ = 371163188352.

The previous prime is 1623838949867. The next prime is 1623838949881. The reversal of 1623838949880 is 889498383261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623838949881) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 966569964 + ... + 966571643.

It is an arithmetic number, because the mean of its divisors is an integer number (86991372360).

Almost surely, 2^{1623838949880} is an apocalyptic number.

1623838949880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1623838949880 is an abundant number, since it is smaller than the sum of its proper divisors (3943608881160).

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

1623838949880 is a wasteful number, since it uses less digits than its factorization.

1623838949880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933141628 (or 1933141624 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 69.

The spelling of 1623838949880 in words is "one trillion, six hundred twenty-three billion, eight hundred thirty-eight million, nine hundred forty-nine thousand, eight hundred eighty".