18953149125 has 32 divisors (see below), whose sum is σ = 33393230208. Its totient is φ = 9513734400.

The previous prime is 18953149121. The next prime is 18953149133. The reversal of 18953149125 is 52194135981.

It is not a de Polignac number, because 18953149125 - 2² = 18953149121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18953149121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1480147 + ... + 1492896.

It is an arithmetic number, because the mean of its divisors is an integer number (1043538444).

Almost surely, 2^18953149125 is an apocalyptic number.

18953149125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18953149125 is a deficient number, since it is larger than the sum of its proper divisors (14440081083).

18953149125 is a wasteful number, since it uses less digits than its factorization.

18953149125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973078 (or 2973068 counting only the distinct ones).

The product of its digits is 388800, while the sum is 48.

The spelling of 18953149125 in words is "eighteen billion, nine hundred fifty-three million, one hundred forty-nine thousand, one hundred twenty-five".