1436036681 has 2 divisors, whose sum is σ = 1436036682. Its totient is φ = 1436036680.

The previous prime is 1436036677. The next prime is 1436036687. The reversal of 1436036681 is 1866306341.

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., 1252027456 + 184009225 = 35384^2 + 13565^2 .

It is an emirp because it is prime and its reverse (1866306341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1436036681 - 2² = 1436036677 is a prime.

It is a super-2 number, since 2×1436036681² = 4124402698354991522, which contains 22 as substring.

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 (1436036687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 718018340 + 718018341.

It is an arithmetic number, because the mean of its divisors is an integer number (718018341).

Almost surely, 2^1436036681 is an apocalyptic number.

It is an amenable number.

1436036681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1436036681 is an equidigital number, since it uses as much as digits as its factorization.

1436036681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1436036681 is about 37895.0746271861. The cubic root of 1436036681 is about 1128.2062755173.

The spelling of 1436036681 in words is "one billion, four hundred thirty-six million, thirty-six thousand, six hundred eighty-one".