1601381427 has 16 divisors (see below), whose sum is σ = 2250168960. Its totient is φ = 1010221632.

The previous prime is 1601381413. The next prime is 1601381437. The reversal of 1601381427 is 7241831061.

It is not a de Polignac number, because 1601381427 - 2¹² = 1601377331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1601381407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34423 + ... + 66239.

It is an arithmetic number, because the mean of its divisors is an integer number (140635560).

Almost surely, 2^1601381427 is an apocalyptic number.

1601381427 is a deficient number, since it is larger than the sum of its proper divisors (648787533).

1601381427 is a wasteful number, since it uses less digits than its factorization.

1601381427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32722.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1601381427 is about 40017.2641118805. The cubic root of 1601381427 is about 1169.9436082105.

The spelling of 1601381427 in words is "one billion, six hundred one million, three hundred eighty-one thousand, four hundred twenty-seven".