19149693657146 has 32 divisors (see below), whose sum is σ = 32633484663360. Its totient is φ = 8354823325056.

The previous prime is 19149693657137. The next prime is 19149693657161. The reversal of 19149693657146 is 64175639694191.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19149693657146.

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 15 ways as a sum of consecutive naturals, for example, 42186236 + ... + 42637751.

It is an arithmetic number, because the mean of its divisors is an integer number (1019796395730).

Almost surely, 2^{19149693657146} is an apocalyptic number.

19149693657146 is a deficient number, since it is larger than the sum of its proper divisors (13483791006214).

19149693657146 is a wasteful number, since it uses less digits than its factorization.

19149693657146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84824478.

The product of its digits is 264539520, while the sum is 71.

The spelling of 19149693657146 in words is "nineteen trillion, one hundred forty-nine billion, six hundred ninety-three million, six hundred fifty-seven thousand, one hundred forty-six".