1897120330560 has 504 divisors, whose sum is σ = 8174563900776. Its totient is φ = 400271155200.

The previous prime is 1897120330517. The next prime is 1897120330577. The reversal of 1897120330560 is 650330217981.

1897120330560 is a `hidden beast` number, since 1 + 89 + 7 + 1 + 2 + 0 + 3 + 3 + 0 + 560 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 200603660544 + 1696516670016 = 447888^2 + 1302504^2 .

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1317510 + ... + 2351610.

It is an arithmetic number, because the mean of its divisors is an integer number (16219372819).

Almost surely, 2^{1897120330560} is an apocalyptic number.

1897120330560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1897120330560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4087281950388).

1897120330560 is an abundant number, since it is smaller than the sum of its proper divisors (6277443570216).

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

1897120330560 is a wasteful number, since it uses less digits than its factorization.

1897120330560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034151 (or 1034131 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 1897120330560 in words is "one trillion, eight hundred ninety-seven billion, one hundred twenty million, three hundred thirty thousand, five hundred sixty".