134401819 has 2 divisors, whose sum is σ = 134401820. Its totient is φ = 134401818.

The previous prime is 134401807. The next prime is 134401859. The reversal of 134401819 is 918104431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 134401819 - 2⁷ = 134401691 is a prime.

It is a super-2 number, since 2×134401819² = 36127697901017522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134401859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67200909 + 67200910.

It is an arithmetic number, because the mean of its divisors is an integer number (67200910).

Almost surely, 2^134401819 is an apocalyptic number.

134401819 is a deficient number, since it is larger than the sum of its proper divisors (1).

134401819 is an equidigital number, since it uses as much as digits as its factorization.

134401819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 134401819 is about 11593.1798485144. The cubic root of 134401819 is about 512.2339768710.

The spelling of 134401819 in words is "one hundred thirty-four million, four hundred one thousand, eight hundred nineteen".