1897125249466 has 8 divisors (see below), whose sum is σ = 2849008399380. Its totient is φ = 947455783008.

The previous prime is 1897125249361. The next prime is 1897125249469. The reversal of 1897125249466 is 6649425217981.

It can be written as a sum of positive squares in 2 ways, for example, as 1662864409441 + 234260840025 = 1289521^2 + 484005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1897125249466² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1897125249398 and 1897125249407.

It is not an unprimeable number, because it can be changed into a prime (1897125249469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553418721 + ... + 553422148.

Almost surely, 2^{1897125249466} is an apocalyptic number.

1897125249466 is a deficient number, since it is larger than the sum of its proper divisors (951883149914).

1897125249466 is a wasteful number, since it uses less digits than its factorization.

1897125249466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106841728.

The product of its digits is 52254720, while the sum is 64.

The spelling of 1897125249466 in words is "one trillion, eight hundred ninety-seven billion, one hundred twenty-five million, two hundred forty-nine thousand, four hundred sixty-six".