381026827 has 4 divisors (see below), whose sum is σ = 389887960. Its totient is φ = 372165696.

The previous prime is 381026803. The next prime is 381026857. The reversal of 381026827 is 728620183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381026827 - 2¹⁵ = 380994059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381026857) 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, 4430502 + ... + 4430587.

It is an arithmetic number, because the mean of its divisors is an integer number (97471990).

Almost surely, 2^381026827 is an apocalyptic number.

381026827 is a deficient number, since it is larger than the sum of its proper divisors (8861133).

381026827 is an equidigital number, since it uses as much as digits as its factorization.

381026827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8861132.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 381026827 is about 19519.9084782691. The cubic root of 381026827 is about 724.9674671093.

The spelling of 381026827 in words is "three hundred eighty-one million, twenty-six thousand, eight hundred twenty-seven".