1868503697 has 4 divisors (see below), whose sum is σ = 1882767216. Its totient is φ = 1854240180.

The previous prime is 1868503687. The next prime is 1868503709. The reversal of 1868503697 is 7963058681.

It is a happy number.

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 1868503697 - 2¹⁶ = 1868438161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1868503667) 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, 7131563 + ... + 7131824.

It is an arithmetic number, because the mean of its divisors is an integer number (470691804).

Almost surely, 2^1868503697 is an apocalyptic number.

It is an amenable number.

1868503697 is a deficient number, since it is larger than the sum of its proper divisors (14263519).

1868503697 is a wasteful number, since it uses less digits than its factorization.

1868503697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14263518.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 1868503697 is about 43226.1922565474. The cubic root of 1868503697 is about 1231.6802772077.

The spelling of 1868503697 in words is "one billion, eight hundred sixty-eight million, five hundred three thousand, six hundred ninety-seven".