135772019 has 2 divisors, whose sum is σ = 135772020. Its totient is φ = 135772018.

The previous prime is 135772009. The next prime is 135772057. The reversal of 135772019 is 910277531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135772019 is a prime.

It is a super-2 number, since 2×135772019² = 36868082286672722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135772019.

It is not a weakly prime, because it can be changed into another prime (135772009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67886009 + 67886010.

It is an arithmetic number, because the mean of its divisors is an integer number (67886010).

Almost surely, 2^135772019 is an apocalyptic number.

135772019 is a deficient number, since it is larger than the sum of its proper divisors (1).

135772019 is an equidigital number, since it uses as much as digits as its factorization.

135772019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 135772019 is about 11652.1250851508. The cubic root of 135772019 is about 513.9688028323.

The spelling of 135772019 in words is "one hundred thirty-five million, seven hundred seventy-two thousand, nineteen".