1368173642 has 16 divisors (see below), whose sum is σ = 2299339872. Its totient is φ = 605088720.

The previous prime is 1368173633. The next prime is 1368173657. The reversal of 1368173642 is 2463718631.

It is a super-2 number, since 2×1368173642² = 3743798229327088328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1368173642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 839588 + ... + 841215.

It is an arithmetic number, because the mean of its divisors is an integer number (143708742).

Almost surely, 2^1368173642 is an apocalyptic number.

1368173642 is a deficient number, since it is larger than the sum of its proper divisors (931166230).

1368173642 is a wasteful number, since it uses less digits than its factorization.

1368173642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680853.

The product of its digits is 145152, while the sum is 41.

The square root of 1368173642 is about 36988.8313143305. The cubic root of 1368173642 is about 1110.1467873947.

The spelling of 1368173642 in words is "one billion, three hundred sixty-eight million, one hundred seventy-three thousand, six hundred forty-two".