135811390 has 64 divisors (see below), whose sum is σ = 291356352. Its totient is φ = 44928000.

The previous prime is 135811339. The next prime is 135811391. The reversal of 135811390 is 93118531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135811391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103740 + ... + 105040.

It is an arithmetic number, because the mean of its divisors is an integer number (4552443).

Almost surely, 2^135811390 is an apocalyptic number.

135811390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135811390 is an abundant number, since it is smaller than the sum of its proper divisors (155544962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135811390 is a wasteful number, since it uses less digits than its factorization.

135811390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 135811390 is about 11653.8143970118. The cubic root of 135811390 is about 514.0184780409.

The spelling of 135811390 in words is "one hundred thirty-five million, eight hundred eleven thousand, three hundred ninety".