1897413329627 has 4 divisors (see below), whose sum is σ = 1897416953040. Its totient is φ = 1897409706216.

The previous prime is 1897413329579. The next prime is 1897413329633. The reversal of 1897413329627 is 7269233147981.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1897413329627 - 2¹² = 1897413325531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1897413329627.

It is not an unprimeable number, because it can be changed into a prime (1897413329657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859352 + ... + 2129157.

It is an arithmetic number, because the mean of its divisors is an integer number (474354238260).

Almost surely, 2^{1897413329627} is an apocalyptic number.

1897413329627 is a deficient number, since it is larger than the sum of its proper divisors (3623413).

1897413329627 is an equidigital number, since it uses as much as digits as its factorization.

1897413329627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623412.

The product of its digits is 27433728, while the sum is 62.

The spelling of 1897413329627 in words is "one trillion, eight hundred ninety-seven billion, four hundred thirteen million, three hundred twenty-nine thousand, six hundred twenty-seven".