381628137 has 16 divisors (see below), whose sum is σ = 557489088. Its totient is φ = 230292480.

The previous prime is 381628127. The next prime is 381628147. The reversal of 381628137 is 731826183.

It is an interprime number because it is at equal distance from previous prime (381628127) and next prime (381628147).

It is a de Polignac number, because none of the positive numbers 2^k-381628137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381628095 and 381628104.

It is not an unprimeable number, because it can be changed into a prime (381628127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17128 + ... + 32505.

It is an arithmetic number, because the mean of its divisors is an integer number (34843068).

Almost surely, 2^381628137 is an apocalyptic number.

It is an amenable number.

381628137 is a deficient number, since it is larger than the sum of its proper divisors (175860951).

381628137 is a wasteful number, since it uses less digits than its factorization.

381628137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49880.

The product of its digits is 48384, while the sum is 39.

The square root of 381628137 is about 19535.3048862822. The cubic root of 381628137 is about 725.3486310584.

The spelling of 381628137 in words is "three hundred eighty-one million, six hundred twenty-eight thousand, one hundred thirty-seven".