381450218608 has 20 divisors (see below), whose sum is σ = 753004324728. Its totient is φ = 187126521920.

The previous prime is 381450218593. The next prime is 381450218609. The reversal of 381450218608 is 806812054183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381450218609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224910838 + ... + 224912533.

Almost surely, 2^381450218608 is an apocalyptic number.

It is an amenable number.

381450218608 is a deficient number, since it is larger than the sum of its proper divisors (371554106120).

381450218608 is a wasteful number, since it uses less digits than its factorization.

381450218608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449823432 (or 449823426 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 381450218608 in words is "three hundred eighty-one billion, four hundred fifty million, two hundred eighteen thousand, six hundred eight".