134165890 has 16 divisors (see below), whose sum is σ = 249826680. Its totient is φ = 51815680.

The previous prime is 134165869. The next prime is 134165929. The reversal of 134165890 is 98561431.

It is a Cunningham number, because it is equal to 11583²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 132319009 + 1846881 = 11503^2 + 1359^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231031 + ... + 231610.

Almost surely, 2^134165890 is an apocalyptic number.

134165890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

134165890 is a deficient number, since it is larger than the sum of its proper divisors (115660790).

134165890 is a wasteful number, since it uses less digits than its factorization.

134165890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462677.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 134165890 is about 11583.0000431667. Note that the first 4 decimals coincide. The cubic root of 134165890 is about 511.9340760865.

It can be divided in two parts, 13416 and 5890, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 134165890 in words is "one hundred thirty-four million, one hundred sixty-five thousand, eight hundred ninety".