1868145742 has 16 divisors (see below), whose sum is σ = 2994790320. Its totient is φ = 870909568.

The previous prime is 1868145739. The next prime is 1868145757. The reversal of 1868145742 is 2475418681.

It is a junction number, because it is equal to n+sod(n) for n = 1868145692 and 1868145701.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 253117 + ... + 260392.

It is an arithmetic number, because the mean of its divisors is an integer number (187174395).

Almost surely, 2^1868145742 is an apocalyptic number.

1868145742 is a deficient number, since it is larger than the sum of its proper divisors (1126644578).

1868145742 is a wasteful number, since it uses less digits than its factorization.

1868145742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513635.

The product of its digits is 430080, while the sum is 46.

The square root of 1868145742 is about 43222.0515709285. The cubic root of 1868145742 is about 1231.6016199250.

The spelling of 1868145742 in words is "one billion, eight hundred sixty-eight million, one hundred forty-five thousand, seven hundred forty-two".