381026747 has 2 divisors, whose sum is σ = 381026748. Its totient is φ = 381026746.

The previous prime is 381026743. The next prime is 381026753. The reversal of 381026747 is 747620183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381026747 - 2² = 381026743 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381026747.

It is not a weakly prime, because it can be changed into another prime (381026743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190513373 + 190513374.

It is an arithmetic number, because the mean of its divisors is an integer number (190513374).

Almost surely, 2^381026747 is an apocalyptic number.

381026747 is a deficient number, since it is larger than the sum of its proper divisors (1).

381026747 is an equidigital number, since it uses as much as digits as its factorization.

381026747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 381026747 is about 19519.9064290790. The cubic root of 381026747 is about 724.9674163715.

The spelling of 381026747 in words is "three hundred eighty-one million, twenty-six thousand, seven hundred forty-seven".