1897920475 has 12 divisors (see below), whose sum is σ = 2567369160. Its totient is φ = 1380305600.

The previous prime is 1897920473. The next prime is 1897920481. The reversal of 1897920475 is 5740297981.

It is not a de Polignac number, because 1897920475 - 2¹ = 1897920473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1897920473) 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, 3450490 + ... + 3451039.

It is an arithmetic number, because the mean of its divisors is an integer number (213947430).

Almost surely, 2^1897920475 is an apocalyptic number.

1897920475 is a deficient number, since it is larger than the sum of its proper divisors (669448685).

1897920475 is a wasteful number, since it uses less digits than its factorization.

1897920475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6901550 (or 6901545 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 1897920475 is about 43565.1291172194. The cubic root of 1897920475 is about 1238.1103012860.

The spelling of 1897920475 in words is "one billion, eight hundred ninety-seven million, nine hundred twenty thousand, four hundred seventy-five".