1897673135 has 16 divisors (see below), whose sum is σ = 2292240384. Its totient is φ = 1508147232.

The previous prime is 1897673123. The next prime is 1897673137. The reversal of 1897673135 is 5313767981.

It is a cyclic number.

It is not a de Polignac number, because 1897673135 - 2¹⁰ = 1897672111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897673137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 626234 + ... + 629256.

It is an arithmetic number, because the mean of its divisors is an integer number (143265024).

Almost surely, 2^1897673135 is an apocalyptic number.

1897673135 is a deficient number, since it is larger than the sum of its proper divisors (394567249).

1897673135 is a wasteful number, since it uses less digits than its factorization.

1897673135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814.

The product of its digits is 952560, while the sum is 50.

The square root of 1897673135 is about 43562.2902864393. The cubic root of 1897673135 is about 1238.0565147848.

The spelling of 1897673135 in words is "one billion, eight hundred ninety-seven million, six hundred seventy-three thousand, one hundred thirty-five".