1436131691 has 2 divisors, whose sum is σ = 1436131692. Its totient is φ = 1436131690.

The previous prime is 1436131643. The next prime is 1436131693. The reversal of 1436131691 is 1961316341.

It is a strong prime.

It is an emirp because it is prime and its reverse (1961316341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1436131691 is a prime.

It is a super-3 number, since 3×1436131691³ (a number of 28 digits) contains 333 as substring.

Together with 1436131693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1436131693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 718065845 + 718065846.

It is an arithmetic number, because the mean of its divisors is an integer number (718065846).

Almost surely, 2^1436131691 is an apocalyptic number.

1436131691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1436131691 is an equidigital number, since it uses as much as digits as its factorization.

1436131691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 1436131691 is about 37896.3281994443. The cubic root of 1436131691 is about 1128.2311561525.

The spelling of 1436131691 in words is "one billion, four hundred thirty-six million, one hundred thirty-one thousand, six hundred ninety-one".