1897345106 has 4 divisors (see below), whose sum is σ = 2846017662. Its totient is φ = 948672552.

The previous prime is 1897345103. The next prime is 1897345139. The reversal of 1897345106 is 6015437981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1294200625 + 603144481 = 35975^2 + 24559^2 .

It is not an unprimeable number, because it can be changed into a prime (1897345103) by changing a digit.

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 as a sum of consecutive naturals, namely, 474336275 + ... + 474336278.

Almost surely, 2^1897345106 is an apocalyptic number.

1897345106 is a deficient number, since it is larger than the sum of its proper divisors (948672556).

1897345106 is an equidigital number, since it uses as much as digits as its factorization.

1897345106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948672555.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1897345106 is about 43558.5250668569. The cubic root of 1897345106 is about 1237.9851744618.

The spelling of 1897345106 in words is "one billion, eight hundred ninety-seven million, three hundred forty-five thousand, one hundred six".