1868742842 has 16 divisors (see below), whose sum is σ = 2897258112. Its totient is φ = 903469440.

The previous prime is 1868742809. The next prime is 1868742851. The reversal of 1868742842 is 2482478681.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111959 + ... + 127562.

It is an arithmetic number, because the mean of its divisors is an integer number (181078632).

Almost surely, 2^1868742842 is an apocalyptic number.

1868742842 is a deficient number, since it is larger than the sum of its proper divisors (1028515270).

1868742842 is a wasteful number, since it uses less digits than its factorization.

1868742842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239653.

The product of its digits is 1376256, while the sum is 50.

The square root of 1868742842 is about 43228.9583728315. The cubic root of 1868742842 is about 1231.7328215003.

The spelling of 1868742842 in words is "one billion, eight hundred sixty-eight million, seven hundred forty-two thousand, eight hundred forty-two".