134101809 has 6 divisors (see below), whose sum is σ = 193702626. Its totient is φ = 89401200.

The previous prime is 134101787. The next prime is 134101811. The reversal of 134101809 is 908101431.

It can be written as a sum of positive squares in only one way, i.e., 89586225 + 44515584 = 9465^2 + 6672^2 .

It is not a de Polignac number, because 134101809 - 2¹⁵ = 134069041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134101909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7450092 + ... + 7450109.

It is an arithmetic number, because the mean of its divisors is an integer number (32283771).

Almost surely, 2^134101809 is an apocalyptic number.

It is an amenable number.

134101809 is a deficient number, since it is larger than the sum of its proper divisors (59600817).

134101809 is a wasteful number, since it uses less digits than its factorization.

134101809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14900207 (or 14900204 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 134101809 is about 11580.2335468677. The cubic root of 134101809 is about 511.8525589146.

The spelling of 134101809 in words is "one hundred thirty-four million, one hundred one thousand, eight hundred nine".