381910909216 has 24 divisors (see below), whose sum is σ = 752137837164. Its totient is φ = 190891776000.

The previous prime is 381910909187. The next prime is 381910909273. The reversal of 381910909216 is 612909019183.

It can be written as a sum of positive squares in 2 ways, for example, as 381671897616 + 239011600 = 617796^2 + 15460^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 381910909216.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1892425 + ... + 2084488.

Almost surely, 2^381910909216 is an apocalyptic number.

It is an amenable number.

381910909216 is a deficient number, since it is larger than the sum of its proper divisors (370226927948).

381910909216 is a wasteful number, since it uses less digits than its factorization.

381910909216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979924 (or 3979916 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 49.

The spelling of 381910909216 in words is "three hundred eighty-one billion, nine hundred ten million, nine hundred nine thousand, two hundred sixteen".