18771901490146 has 8 divisors (see below), whose sum is σ = 32180402554560. Its totient is φ = 8045100638628.

The previous prime is 18771901490141. The next prime is 18771901490159. The reversal of 18771901490146 is 64109410917781.

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

It is not an unprimeable number, because it can be changed into a prime (18771901490141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670425053206 + ... + 670425053233.

It is an arithmetic number, because the mean of its divisors is an integer number (4022550319320).

Almost surely, 2^{18771901490146} is an apocalyptic number.

18771901490146 is a deficient number, since it is larger than the sum of its proper divisors (13408501064414).

18771901490146 is a wasteful number, since it uses less digits than its factorization.

18771901490146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340850106448.

The product of its (nonzero) digits is 3048192, while the sum is 58.

The spelling of 18771901490146 in words is "eighteen trillion, seven hundred seventy-one billion, nine hundred one million, four hundred ninety thousand, one hundred forty-six".