18953511153 has 16 divisors (see below), whose sum is σ = 25479289536. Its totient is φ = 12532101120.

The previous prime is 18953511151. The next prime is 18953511167. The reversal of 18953511153 is 35111535981.

It is not a de Polignac number, because 18953511153 - 2¹ = 18953511151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18953511151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142201 + ... + 241097.

It is an arithmetic number, because the mean of its divisors is an integer number (1592455596).

Almost surely, 2^18953511153 is an apocalyptic number.

It is an amenable number.

18953511153 is a deficient number, since it is larger than the sum of its proper divisors (6525778383).

18953511153 is a wasteful number, since it uses less digits than its factorization.

18953511153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99424.

The product of its digits is 81000, while the sum is 42.

The spelling of 18953511153 in words is "eighteen billion, nine hundred fifty-three million, five hundred eleven thousand, one hundred fifty-three".