381624151 has 4 divisors (see below), whose sum is σ = 385125400. Its totient is φ = 378122904.

The previous prime is 381624127. The next prime is 381624181. The reversal of 381624151 is 151426183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151426183 = 139 ⋅1089397.

It is a cyclic number.

It is not a de Polignac number, because 381624151 - 2⁹ = 381623639 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 (381624121) 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, 1750461 + ... + 1750678.

It is an arithmetic number, because the mean of its divisors is an integer number (96281350).

Almost surely, 2^381624151 is an apocalyptic number.

381624151 is a deficient number, since it is larger than the sum of its proper divisors (3501249).

381624151 is a wasteful number, since it uses less digits than its factorization.

381624151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501248.

The product of its digits is 5760, while the sum is 31.

The square root of 381624151 is about 19535.2028655963. The cubic root of 381624151 is about 725.3461056946.

The spelling of 381624151 in words is "three hundred eighty-one million, six hundred twenty-four thousand, one hundred fifty-one".