19149693657148 has 12 divisors (see below), whose sum is σ = 33626339205480. Its totient is φ = 9542168169872.

The previous prime is 19149693657137. The next prime is 19149693657161. The reversal of 19149693657148 is 84175639694191.

It is a super-2 number, since 2×19149693657148² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 8169663358 + ... + 8169665701.

It is an arithmetic number, because the mean of its divisors is an integer number (2802194933790).

Almost surely, 2^{19149693657148} is an apocalyptic number.

It is an amenable number.

19149693657148 is a deficient number, since it is larger than the sum of its proper divisors (14476645548332).

19149693657148 is a wasteful number, since it uses less digits than its factorization.

19149693657148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16339329356 (or 16339329354 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 73.

The spelling of 19149693657148 in words is "nineteen trillion, one hundred forty-nine billion, six hundred ninety-three million, six hundred fifty-seven thousand, one hundred forty-eight".