1995374226618 has 32 divisors (see below), whose sum is σ = 4434555312000. Its totient is φ = 665066187648.

The previous prime is 1995374226607. The next prime is 1995374226631. The reversal of 1995374226618 is 8166224735991.

1995374226618 is a `hidden beast` number, since 1 + 9 + 9 + 5 + 3 + 7 + 4 + 2 + 2 + 6 + 618 = 666.

It is a super-3 number, since 3×1995374226618³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1005271 + ... + 2236362.

It is an arithmetic number, because the mean of its divisors is an integer number (138579853500).

Almost surely, 2^{1995374226618} is an apocalyptic number.

1995374226618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1995374226618 is an abundant number, since it is smaller than the sum of its proper divisors (2439181085382).

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

1995374226618 is a wasteful number, since it uses less digits than its factorization.

1995374226618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253043 (or 3253037 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 1995374226618 in words is "one trillion, nine hundred ninety-five billion, three hundred seventy-four million, two hundred twenty-six thousand, six hundred eighteen".