381000733 has 2 divisors, whose sum is σ = 381000734. Its totient is φ = 381000732.

The previous prime is 381000731. The next prime is 381000743. The reversal of 381000733 is 337000183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351112644 + 29888089 = 18738^2 + 5467^2 .

It is a cyclic number.

It is not a de Polignac number, because 381000733 - 2¹ = 381000731 is a prime.

Together with 381000731, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 381000698 and 381000707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381000731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190500366 + 190500367.

It is an arithmetic number, because the mean of its divisors is an integer number (190500367).

Almost surely, 2^381000733 is an apocalyptic number.

It is an amenable number.

381000733 is a deficient number, since it is larger than the sum of its proper divisors (1).

381000733 is an equidigital number, since it uses as much as digits as its factorization.

381000733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 381000733 is about 19519.2400722979. The cubic root of 381000733 is about 724.9509173272.

The spelling of 381000733 in words is "three hundred eighty-one million, seven hundred thirty-three", and thus it is an aban number.