1897944223120 has 40 divisors (see below), whose sum is σ = 4813876713600. Its totient is φ = 690161535360.

The previous prime is 1897944223117. The next prime is 1897944223139. The reversal of 1897944223120 is 213224497981.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078376520 + ... + 1078378279.

It is an arithmetic number, because the mean of its divisors is an integer number (120346917840).

Almost surely, 2^{1897944223120} is an apocalyptic number.

1897944223120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1897944223120 is an abundant number, since it is smaller than the sum of its proper divisors (2915932490480).

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

1897944223120 is a wasteful number, since it uses less digits than its factorization.

1897944223120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156754823 (or 2156754817 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 1897944223120 in words is "one trillion, eight hundred ninety-seven billion, nine hundred forty-four million, two hundred twenty-three thousand, one hundred twenty".