381006407 has 2 divisors, whose sum is σ = 381006408. Its totient is φ = 381006406.

The previous prime is 381006403. The next prime is 381006467. The reversal of 381006407 is 704600183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381006407 - 2² = 381006403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381006407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381006401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190503203 + 190503204.

It is an arithmetic number, because the mean of its divisors is an integer number (190503204).

Almost surely, 2^381006407 is an apocalyptic number.

381006407 is a deficient number, since it is larger than the sum of its proper divisors (1).

381006407 is an equidigital number, since it uses as much as digits as its factorization.

381006407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 381006407 is about 19519.3854155299. The cubic root of 381006407 is about 724.9545160526.

The spelling of 381006407 in words is "three hundred eighty-one million, six thousand, four hundred seven".