134109819 has 18 divisors (see below), whose sum is σ = 198348540. Its totient is φ = 87316488.

The previous prime is 134109799. The next prime is 134109853. The reversal of 134109819 is 918901431.

It is not a de Polignac number, because 134109819 - 2⁷ = 134109691 is a prime.

It is a super-2 number, since 2×134109819² = 35970887104425522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (134109119) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12612 + ... + 20670.

Almost surely, 2^134109819 is an apocalyptic number.

134109819 is a deficient number, since it is larger than the sum of its proper divisors (64238721).

134109819 is an equidigital number, since it uses as much as digits as its factorization.

134109819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151 (or 8105 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 134109819 is about 11580.5793896506. The cubic root of 134109819 is about 511.8627498220.

The spelling of 134109819 in words is "one hundred thirty-four million, one hundred nine thousand, eight hundred nineteen".