1897407071296 has 105 divisors (see below), whose sum is σ = 4144570713255. Its totient is φ = 861851675520.

The previous prime is 1897407071279. The next prime is 1897407071303. The reversal of 1897407071296 is 6921707047981.

The square root of 1897407071296 is 1377464.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1333384441 + ... + 1333385863.

It is an arithmetic number, because the mean of its divisors is an integer number (39472102031).

Almost surely, 2^{1897407071296} is an apocalyptic number.

1897407071296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1897407071296 is the 1377464-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1897407071296

1897407071296 is an abundant number, since it is smaller than the sum of its proper divisors (2247163641959).

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

1897407071296 is an frugal number, since it uses more digits than its factorization.

1897407071296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902 (or 1436 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 1897407071296 in words is "one trillion, eight hundred ninety-seven billion, four hundred seven million, seventy-one thousand, two hundred ninety-six".