1897330 has 8 divisors (see below), whose sum is σ = 3415212. Its totient is φ = 758928.

The previous prime is 1897327. The next prime is 1897361. The reversal of 1897330 is 337981.

It can be written as a sum of positive squares in 2 ways, for example, as 1879641 + 17689 = 1371^2 + 133^2 .

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

It is a super-2 number, since 2×1897330² = 7199722257800, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1897292 and 1897301.

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, 94857 + ... + 94876.

2^1897330 is an apocalyptic number.

1897330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1897330 is a deficient number, since it is larger than the sum of its proper divisors (1517882).

1897330 is a wasteful number, since it uses less digits than its factorization.

1897330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189740.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1897330 is about 1377.4360239227. The cubic root of 1897330 is about 123.7981888984.

The spelling of 1897330 in words is "one million, eight hundred ninety-seven thousand, three hundred thirty".