381380045187 has 8 divisors (see below), whose sum is σ = 508584069136. Its totient is φ = 254214692352.

The previous prime is 381380045153. The next prime is 381380045197. The reversal of 381380045187 is 781540083183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381380045187 - 2³² = 377085077891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381380045147) 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, 9644758 + ... + 9684219.

It is an arithmetic number, because the mean of its divisors is an integer number (63573008642).

Almost surely, 2^381380045187 is an apocalyptic number.

381380045187 is a deficient number, since it is larger than the sum of its proper divisors (127204023949).

381380045187 is a wasteful number, since it uses less digits than its factorization.

381380045187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19335557.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 381380045187 in words is "three hundred eighty-one billion, three hundred eighty million, forty-five thousand, one hundred eighty-seven".