1591476401 has 2 divisors, whose sum is σ = 1591476402. Its totient is φ = 1591476400.

The previous prime is 1591476389. The next prime is 1591476479. The reversal of 1591476401 is 1046741951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1532800801 + 58675600 = 39151^2 + 7660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1591476401 - 2¹⁸ = 1591214257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1591476701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 795738200 + 795738201.

It is an arithmetic number, because the mean of its divisors is an integer number (795738201).

Almost surely, 2^1591476401 is an apocalyptic number.

It is an amenable number.

1591476401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1591476401 is an equidigital number, since it uses as much as digits as its factorization.

1591476401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1591476401 is about 39893.3127353445. The cubic root of 1591476401 is about 1167.5264666680.

The spelling of 1591476401 in words is "one billion, five hundred ninety-one million, four hundred seventy-six thousand, four hundred one".