64838019 has 16 divisors (see below), whose sum is σ = 89717760. Its totient is φ = 41606880.

The previous prime is 64838009. The next prime is 64838021. The reversal of 64838019 is 91083846.

It is not a de Polignac number, because 64838019 - 2⁴ = 64838003 is a prime.

It is a super-2 number, since 2×64838019² = 8407937415688722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64838009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16552 + ... + 20090.

It is an arithmetic number, because the mean of its divisors is an integer number (5607360).

Almost surely, 2^64838019 is an apocalyptic number.

64838019 is a deficient number, since it is larger than the sum of its proper divisors (24879741).

64838019 is a wasteful number, since it uses less digits than its factorization.

64838019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 64838019 is about 8052.2058468472. The cubic root of 64838019 is about 401.7383076895.

The spelling of 64838019 in words is "sixty-four million, eight hundred thirty-eight thousand, nineteen".