1897898052 has 24 divisors (see below), whose sum is σ = 4531416736. Its totient is φ = 617920128.

The previous prime is 1897898029. The next prime is 1897898059. The reversal of 1897898052 is 2508987981.

It is a junction number, because it is equal to n+sod(n) for n = 1897897983 and 1897898001.

It is not an unprimeable number, because it can be changed into a prime (1897898059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838533 + ... + 1839564.

Almost surely, 2^1897898052 is an apocalyptic number.

1897898052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1897898052 is an abundant number, since it is smaller than the sum of its proper divisors (2633518684).

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

1897898052 is a wasteful number, since it uses less digits than its factorization.

1897898052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678147 (or 3678145 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 57.

The square root of 1897898052 is about 43564.8717661375. The cubic root of 1897898052 is about 1238.1054253781.

The spelling of 1897898052 in words is "one billion, eight hundred ninety-seven million, eight hundred ninety-eight thousand, fifty-two".