1864198313 has 4 divisors (see below), whose sum is σ = 1887795840. Its totient is φ = 1840600788.

The previous prime is 1864198267. The next prime is 1864198337. The reversal of 1864198313 is 3138914681.

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 1864198313 - 2⁸ = 1864198057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1864198363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11798645 + ... + 11798802.

It is an arithmetic number, because the mean of its divisors is an integer number (471948960).

Almost surely, 2^1864198313 is an apocalyptic number.

It is an amenable number.

1864198313 is a deficient number, since it is larger than the sum of its proper divisors (23597527).

1864198313 is an equidigital number, since it uses as much as digits as its factorization.

1864198313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23597526.

The product of its digits is 124416, while the sum is 44.

The square root of 1864198313 is about 43176.3628968444. The cubic root of 1864198313 is about 1230.7335420001.

The spelling of 1864198313 in words is "one billion, eight hundred sixty-four million, one hundred ninety-eight thousand, three hundred thirteen".