1868196258 has 32 divisors (see below), whose sum is σ = 4229884800. Its totient is φ = 610981488.

The previous prime is 1868196257. The next prime is 1868196259. The reversal of 1868196258 is 8526918681.

It is a happy number.

1868196258 is a `hidden beast` number, since 1 + 8 + 6 + 8 + 1 + 9 + 625 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1868196257) and next prime (1868196259).

It is a super-3 number, since 3×1868196258³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1868196257) 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 15 ways as a sum of consecutive naturals, for example, 323518 + ... + 329241.

It is an arithmetic number, because the mean of its divisors is an integer number (132183900).

Almost surely, 2^1868196258 is an apocalyptic number.

1868196258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1868196258 is an abundant number, since it is smaller than the sum of its proper divisors (2361688542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868196258 is a wasteful number, since it uses less digits than its factorization.

1868196258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652823 (or 652817 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 1868196258 is about 43222.6359446066. The cubic root of 1868196258 is about 1231.6127209552.

The spelling of 1868196258 in words is "one billion, eight hundred sixty-eight million, one hundred ninety-six thousand, two hundred fifty-eight".