381450661582 has 16 divisors (see below), whose sum is σ = 583368314112. Its totient is φ = 186999452640.

The previous prime is 381450661567. The next prime is 381450661583. The reversal of 381450661582 is 285166054183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381450661583) 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, 1067253 + ... + 1379104.

It is an arithmetic number, because the mean of its divisors is an integer number (36460519632).

Almost surely, 2^381450661582 is an apocalyptic number.

381450661582 is a deficient number, since it is larger than the sum of its proper divisors (201917652530).

381450661582 is a wasteful number, since it uses less digits than its factorization.

381450661582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447883.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 381450661582 in words is "three hundred eighty-one billion, four hundred fifty million, six hundred sixty-one thousand, five hundred eighty-two".