381375245 has 8 divisors (see below), whose sum is σ = 458499480. Its totient is φ = 304534080.

The previous prime is 381375223. The next prime is 381375251. The reversal of 381375245 is 542573183.

It can be written as a sum of positive squares in 4 ways, for example, as 21058921 + 360316324 = 4589^2 + 18982^2 .

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

It is not a de Polignac number, because 381375245 - 2²² = 377180941 is a prime.

It is a Curzon number.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 381375199 and 381375208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67790 + ... + 73199.

It is an arithmetic number, because the mean of its divisors is an integer number (57312435).

Almost surely, 2^381375245 is an apocalyptic number.

It is an amenable number.

381375245 is a deficient number, since it is larger than the sum of its proper divisors (77124235).

381375245 is a wasteful number, since it uses less digits than its factorization.

381375245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141535.

The product of its digits is 100800, while the sum is 38.

The square root of 381375245 is about 19528.8311222152. The cubic root of 381375245 is about 725.1883743567.

The spelling of 381375245 in words is "three hundred eighty-one million, three hundred seventy-five thousand, two hundred forty-five".