381938437 has 8 divisors (see below), whose sum is σ = 419520960. Its totient is φ = 346104000.

The previous prime is 381938419. The next prime is 381938441. The reversal of 381938437 is 734839183.

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 381938437 - 2¹¹ = 381936389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381932437) 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, 436564 + ... + 437437.

It is an arithmetic number, because the mean of its divisors is an integer number (52440120).

Almost surely, 2^381938437 is an apocalyptic number.

It is an amenable number.

381938437 is a deficient number, since it is larger than the sum of its proper divisors (37582523).

381938437 is a wasteful number, since it uses less digits than its factorization.

381938437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874043.

The product of its digits is 435456, while the sum is 46.

The square root of 381938437 is about 19543.2453036849. The cubic root of 381938437 is about 725.5451702924.

It can be divided in two parts, 381938 and 437, that added together give a triangular number (382375 = T₈₇₄).

The spelling of 381938437 in words is "three hundred eighty-one million, nine hundred thirty-eight thousand, four hundred thirty-seven".