4264145621 has 2 divisors, whose sum is σ = 4264145622. Its totient is φ = 4264145620.

The previous prime is 4264145609. The next prime is 4264145671. The reversal of 4264145621 is 1265414624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3547512721 + 716632900 = 59561^2 + 26770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4264145621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4264145671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2132072810 + 2132072811.

It is an arithmetic number, because the mean of its divisors is an integer number (2132072811).

Almost surely, 2^4264145621 is an apocalyptic number.

It is an amenable number.

4264145621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4264145621 is an equidigital number, since it uses as much as digits as its factorization.

4264145621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 35.

The square root of 4264145621 is about 65300.4258868195. The cubic root of 4264145621 is about 1621.6010211110.

The spelling of 4264145621 in words is "four billion, two hundred sixty-four million, one hundred forty-five thousand, six hundred twenty-one".