1863135197 has 12 divisors (see below), whose sum is σ = 2323342176. Its totient is φ = 1451498520.

The previous prime is 1863135181. The next prime is 1863135223. The reversal of 1863135197 is 7915313681.

It is not a de Polignac number, because 1863135197 - 2⁴ = 1863135181 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 (1863135137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376304 + ... + 381222.

It is an arithmetic number, because the mean of its divisors is an integer number (193611848).

Almost surely, 2^1863135197 is an apocalyptic number.

It is an amenable number.

1863135197 is a deficient number, since it is larger than the sum of its proper divisors (460206979).

1863135197 is an frugal number, since it uses more digits than its factorization.

1863135197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856 (or 4937 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 1863135197 is about 43164.0498215818. The cubic root of 1863135197 is about 1230.4995430543.

The spelling of 1863135197 in words is "one billion, eight hundred sixty-three million, one hundred thirty-five thousand, one hundred ninety-seven".