436013681 has 2 divisors, whose sum is σ = 436013682. Its totient is φ = 436013680.

The previous prime is 436013663. The next prime is 436013693. The reversal of 436013681 is 186310634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343546225 + 92467456 = 18535^2 + 9616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-436013681 is a prime.

It is a super-2 number, since 2×436013681² = 380215860038339522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (436013651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218006840 + 218006841.

It is an arithmetic number, because the mean of its divisors is an integer number (218006841).

Almost surely, 2^436013681 is an apocalyptic number.

It is an amenable number.

436013681 is a deficient number, since it is larger than the sum of its proper divisors (1).

436013681 is an equidigital number, since it uses as much as digits as its factorization.

436013681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 436013681 is about 20880.9406157864. The cubic root of 436013681 is about 758.2865838051.

The spelling of 436013681 in words is "four hundred thirty-six million, thirteen thousand, six hundred eighty-one".