1897487422 has 16 divisors (see below), whose sum is σ = 2877415632. Its totient is φ = 938361600.

The previous prime is 1897487407. The next prime is 1897487441. The reversal of 1897487422 is 2247847981.

It is a self number, because there is not a number n which added to its sum of digits gives 1897487422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573172 + ... + 576472.

It is an arithmetic number, because the mean of its divisors is an integer number (179838477).

Almost surely, 2^1897487422 is an apocalyptic number.

1897487422 is a deficient number, since it is larger than the sum of its proper divisors (979928210).

1897487422 is a wasteful number, since it uses less digits than its factorization.

1897487422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6363.

The product of its digits is 1806336, while the sum is 52.

The square root of 1897487422 is about 43560.1586544402. The cubic root of 1897487422 is about 1238.0161266052.

The spelling of 1897487422 in words is "one billion, eight hundred ninety-seven million, four hundred eighty-seven thousand, four hundred twenty-two".