1897648252 has 12 divisors (see below), whose sum is σ = 3383543016. Its totient is φ = 930921680.

The previous prime is 1897648231. The next prime is 1897648261. The reversal of 1897648252 is 2528467981.

It is a self number, because there is not a number n which added to its sum of digits gives 1897648252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4475374 + ... + 4475797.

It is an arithmetic number, because the mean of its divisors is an integer number (281961918).

Almost surely, 2^1897648252 is an apocalyptic number.

It is an amenable number.

1897648252 is a deficient number, since it is larger than the sum of its proper divisors (1485894764).

1897648252 is a wasteful number, since it uses less digits than its factorization.

1897648252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8951228 (or 8951226 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The square root of 1897648252 is about 43562.0046829803. The cubic root of 1897648252 is about 1238.0511034745.

The spelling of 1897648252 in words is "one billion, eight hundred ninety-seven million, six hundred forty-eight thousand, two hundred fifty-two".