1897383146 has 16 divisors (see below), whose sum is σ = 2901878784. Its totient is φ = 930116304.

The previous prime is 1897383139. The next prime is 1897383157. The reversal of 1897383146 is 6413837981.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1897383094 and 1897383103.

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, 160391 + ... + 171813.

It is an arithmetic number, because the mean of its divisors is an integer number (181367424).

Almost surely, 2^1897383146 is an apocalyptic number.

1897383146 is a deficient number, since it is larger than the sum of its proper divisors (1004495638).

1897383146 is a wasteful number, since it uses less digits than its factorization.

1897383146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13045.

The product of its digits is 870912, while the sum is 50.

The square root of 1897383146 is about 43558.9617185718. The cubic root of 1897383146 is about 1237.9934478893.

The spelling of 1897383146 in words is "one billion, eight hundred ninety-seven million, three hundred eighty-three thousand, one hundred forty-six".