1896107897 has 4 divisors (see below), whose sum is σ = 1896594420. Its totient is φ = 1895621376.

The previous prime is 1896107893. The next prime is 1896107909. The reversal of 1896107897 is 7987016981.

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

It can be written as a sum of positive squares in 2 ways, for example, as 495552121 + 1400555776 = 22261^2 + 37424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1896107897 - 2² = 1896107893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1896107891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237368 + ... + 245225.

It is an arithmetic number, because the mean of its divisors is an integer number (474148605).

Almost surely, 2^1896107897 is an apocalyptic number.

It is an amenable number.

1896107897 is a deficient number, since it is larger than the sum of its proper divisors (486523).

1896107897 is an equidigital number, since it uses as much as digits as its factorization.

1896107897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486522.

The product of its (nonzero) digits is 1524096, while the sum is 56.

The square root of 1896107897 is about 43544.3210648645. The cubic root of 1896107897 is about 1237.7160300609.

The spelling of 1896107897 in words is "one billion, eight hundred ninety-six million, one hundred seven thousand, eight hundred ninety-seven".