381010804638 has 8 divisors (see below), whose sum is σ = 762021609288. Its totient is φ = 127003601544.

The previous prime is 381010804619. The next prime is 381010804639. The reversal of 381010804638 is 836408010183.

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

381010804638 is an admirable number.

It is a super-2 number, since 2×381010804638² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 381010804638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381010804639) 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, 31750900381 + ... + 31750900392.

It is an arithmetic number, because the mean of its divisors is an integer number (95252701161).

Almost surely, 2^381010804638 is an apocalyptic number.

381010804638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

381010804638 is a wasteful number, since it uses less digits than its factorization.

381010804638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63501800778.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 381010804638 in words is "three hundred eighty-one billion, ten million, eight hundred four thousand, six hundred thirty-eight".