1898689897925 has 12 divisors (see below), whose sum is σ = 2364933217920. Its totient is φ = 1512140470320.

The previous prime is 1898689897889. The next prime is 1898689897927. The reversal of 1898689897925 is 5297989868981.

It is not a de Polignac number, because 1898689897925 - 2⁶ = 1898689897861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898689897927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170280515 + ... + 170291664.

It is an arithmetic number, because the mean of its divisors is an integer number (197077768160).

Almost surely, 2^{1898689897925} is an apocalyptic number.

It is an amenable number.

1898689897925 is a deficient number, since it is larger than the sum of its proper divisors (466243319995).

1898689897925 is a wasteful number, since it uses less digits than its factorization.

1898689897925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340572412 (or 340572407 counting only the distinct ones).

The product of its digits is 11287019520, while the sum is 89.

The spelling of 1898689897925 in words is "one trillion, eight hundred ninety-eight billion, six hundred eighty-nine million, eight hundred ninety-seven thousand, nine hundred twenty-five".