18953379066 has 16 divisors (see below), whose sum is σ = 37916028288. Its totient is φ = 6316248000.

The previous prime is 18953379061. The next prime is 18953379127. The reversal of 18953379066 is 66097335981.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18953378997 and 18953379015.

It is not an unprimeable number, because it can be changed into a prime (18953379061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359535 + ... + 408866.

It is an arithmetic number, because the mean of its divisors is an integer number (2369751768).

Almost surely, 2^18953379066 is an apocalyptic number.

18953379066 is an abundant number, since it is smaller than the sum of its proper divisors (18962649222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18953379066 is a wasteful number, since it uses less digits than its factorization.

18953379066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772517.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 18953379066 in words is "eighteen billion, nine hundred fifty-three million, three hundred seventy-nine thousand, sixty-six".