18849478101950 has 12 divisors (see below), whose sum is σ = 35060029269720. Its totient is φ = 7539791240760.

The previous prime is 18849478101919. The next prime is 18849478101967. The reversal of 18849478101950 is 5910187494881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188494780970 + ... + 188494781069.

It is an arithmetic number, because the mean of its divisors is an integer number (2921669105810).

Almost surely, 2^{18849478101950} is an apocalyptic number.

18849478101950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18849478101950 is a deficient number, since it is larger than the sum of its proper divisors (16210551167770).

18849478101950 is a wasteful number, since it uses less digits than its factorization.

18849478101950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376989562051 (or 376989562046 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 65.

The spelling of 18849478101950 in words is "eighteen trillion, eight hundred forty-nine billion, four hundred seventy-eight million, one hundred one thousand, nine hundred fifty".