1863968497 has 4 divisors (see below), whose sum is σ = 1864136176. Its totient is φ = 1863800820.

The previous prime is 1863968489. The next prime is 1863968503. The reversal of 1863968497 is 7948693681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1863968497 - 2³ = 1863968489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1863968437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65883 + ... + 89824.

It is an arithmetic number, because the mean of its divisors is an integer number (466034044).

Almost surely, 2^1863968497 is an apocalyptic number.

It is an amenable number.

1863968497 is a deficient number, since it is larger than the sum of its proper divisors (167679).

1863968497 is a wasteful number, since it uses less digits than its factorization.

1863968497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167678.

The product of its digits is 15676416, while the sum is 61.

The square root of 1863968497 is about 43173.7014512307. The cubic root of 1863968497 is about 1230.6829654991.

The spelling of 1863968497 in words is "one billion, eight hundred sixty-three million, nine hundred sixty-eight thousand, four hundred ninety-seven".