381962687 has 8 divisors (see below), whose sum is σ = 397125120. Its totient is φ = 366977880.

The previous prime is 381962677. The next prime is 381962689. The reversal of 381962687 is 786269183.

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

It is a cyclic number.

It is not a de Polignac number, because 381962687 - 2¹⁰ = 381961663 is a prime.

It is a super-3 number, since 3×381962687³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381962689) 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, 40013 + ... + 48630.

It is an arithmetic number, because the mean of its divisors is an integer number (49640640).

Almost surely, 2^381962687 is an apocalyptic number.

381962687 is a deficient number, since it is larger than the sum of its proper divisors (15162433).

381962687 is a wasteful number, since it uses less digits than its factorization.

381962687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88813.

The product of its digits is 870912, while the sum is 50.

The square root of 381962687 is about 19543.8657128010. The cubic root of 381962687 is about 725.5605253831.

The spelling of 381962687 in words is "three hundred eighty-one million, nine hundred sixty-two thousand, six hundred eighty-seven".