135884951 has 4 divisors (see below), whose sum is σ = 138448872. Its totient is φ = 133321032.

The previous prime is 135884891. The next prime is 135884963. The reversal of 135884951 is 159488531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159488531 = 47 ⋅3393373.

It is a cyclic number.

It is not a de Polignac number, because 135884951 - 2¹⁰ = 135883927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135884051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281881 + ... + 1281986.

It is an arithmetic number, because the mean of its divisors is an integer number (34612218).

Almost surely, 2^135884951 is an apocalyptic number.

135884951 is a deficient number, since it is larger than the sum of its proper divisors (2563921).

135884951 is an equidigital number, since it uses as much as digits as its factorization.

135884951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563920.

The product of its digits is 172800, while the sum is 44.

The square root of 135884951 is about 11656.9700608692. The cubic root of 135884951 is about 514.1112657630. Note that the first 3 decimals are identical.

The spelling of 135884951 in words is "one hundred thirty-five million, eight hundred eighty-four thousand, nine hundred fifty-one".