135774251949 has 192 divisors, whose sum is σ = 232950423552. Its totient is φ = 69956006400.

The previous prime is 135774251939. The next prime is 135774251983. The reversal of 135774251949 is 949152477531.

It is not a de Polignac number, because 135774251949 - 2⁴ = 135774251933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135774251939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 442261254 + ... + 442261560.

It is an arithmetic number, because the mean of its divisors is an integer number (1213283456).

Almost surely, 2^135774251949 is an apocalyptic number.

It is an amenable number.

135774251949 is a deficient number, since it is larger than the sum of its proper divisors (97176171603).

135774251949 is a wasteful number, since it uses less digits than its factorization.

135774251949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 489 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 57.

The spelling of 135774251949 in words is "one hundred thirty-five billion, seven hundred seventy-four million, two hundred fifty-one thousand, nine hundred forty-nine".