4001512609 has 2 divisors, whose sum is σ = 4001512610. Its totient is φ = 4001512608.

The previous prime is 4001512583. The next prime is 4001512673. The reversal of 4001512609 is 9062151004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3487493025 + 514019584 = 59055^2 + 22672^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001512609 - 2¹⁷ = 4001381537 is a prime.

It is not a weakly prime, because it can be changed into another prime (4001519609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000756304 + 2000756305.

It is an arithmetic number, because the mean of its divisors is an integer number (2000756305).

Almost surely, 2^4001512609 is an apocalyptic number.

It is an amenable number.

4001512609 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001512609 is an equidigital number, since it uses as much as digits as its factorization.

4001512609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 4001512609 is about 63257.5102971971. The cubic root of 4001512609 is about 1587.6011198448.

The spelling of 4001512609 in words is "four billion, one million, five hundred twelve thousand, six hundred nine".