18937146728842 has 8 divisors (see below), whose sum is σ = 28406067906816. Its totient is φ = 9468457426572.

The previous prime is 18937146728831. The next prime is 18937146728867. The reversal of 18937146728842 is 24882764173981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18937146728842² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57764608 + ... + 58091515.

It is an arithmetic number, because the mean of its divisors is an integer number (3550758488352).

Almost surely, 2^{18937146728842} is an apocalyptic number.

18937146728842 is a deficient number, since it is larger than the sum of its proper divisors (9468921177974).

18937146728842 is a wasteful number, since it uses less digits than its factorization.

18937146728842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115937852.

The product of its digits is 260112384, while the sum is 70.

The spelling of 18937146728842 in words is "eighteen trillion, nine hundred thirty-seven billion, one hundred forty-six million, seven hundred twenty-eight thousand, eight hundred forty-two".