381550939446 has 16 divisors (see below), whose sum is σ = 763107945264. Its totient is φ = 127182635424.

The previous prime is 381550939411. The next prime is 381550939481. The reversal of 381550939446 is 644939055183.

It is an interprime number because it is at equal distance from previous prime (381550939411) and next prime (381550939481).

It is a super-2 number, since 2×381550939446² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277940 + ... + 1547976.

It is an arithmetic number, because the mean of its divisors is an integer number (47694246579).

Almost surely, 2^381550939446 is an apocalyptic number.

381550939446 is an abundant number, since it is smaller than the sum of its proper divisors (381557005818).

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

381550939446 is a wasteful number, since it uses less digits than its factorization.

381550939446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505535.

The product of its (nonzero) digits is 13996800, while the sum is 57.

The spelling of 381550939446 in words is "three hundred eighty-one billion, five hundred fifty million, nine hundred thirty-nine thousand, four hundred forty-six".