381426437 has 12 divisors (see below), whose sum is σ = 444151296. Its totient is φ = 326604600.

The previous prime is 381426401. The next prime is 381426439. The reversal of 381426437 is 734624183.

It is not a de Polignac number, because 381426437 - 2¹⁶ = 381360901 is a prime.

It is a super-2 number, since 2×381426437² = 290972253685029938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381426437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381426439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53018 + ... + 59780.

It is an arithmetic number, because the mean of its divisors is an integer number (37012608).

Almost surely, 2^381426437 is an apocalyptic number.

It is an amenable number.

381426437 is a deficient number, since it is larger than the sum of its proper divisors (62724859).

381426437 is a wasteful number, since it uses less digits than its factorization.

381426437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928 (or 7921 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 381426437 is about 19530.1417557579. The cubic root of 381426437 is about 725.2208202507.

The spelling of 381426437 in words is "three hundred eighty-one million, four hundred twenty-six thousand, four hundred thirty-seven".