1897580042 has 8 divisors (see below), whose sum is σ = 2860819236. Its totient is φ = 943973632.

The previous prime is 1897579991. The next prime is 1897580089. The reversal of 1897580042 is 2400857981.

It can be written as a sum of positive squares in 2 ways, for example, as 1897560721 + 19321 = 43561^2 + 139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1897579975 and 1897580002.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2407703 + ... + 2408490.

Almost surely, 2^1897580042 is an apocalyptic number.

1897580042 is a deficient number, since it is larger than the sum of its proper divisors (963239194).

1897580042 is a wasteful number, since it uses less digits than its factorization.

1897580042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816392.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 1897580042 is about 43561.2217689082. The cubic root of 1897580042 is about 1238.0362695913.

The spelling of 1897580042 in words is "one billion, eight hundred ninety-seven million, five hundred eighty thousand, forty-two".