65238419 has 8 divisors (see below), whose sum is σ = 71658240. Its totient is φ = 59117256.

The previous prime is 65238409. The next prime is 65238431. The reversal of 65238419 is 91483256.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65238419 is a prime.

It is a super-2 number, since 2×65238419² = 8512102627239122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65238409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74207 + ... + 75080.

It is an arithmetic number, because the mean of its divisors is an integer number (8957280).

Almost surely, 2^65238419 is an apocalyptic number.

65238419 is a deficient number, since it is larger than the sum of its proper divisors (6419821).

65238419 is a wasteful number, since it uses less digits than its factorization.

65238419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149329.

The product of its digits is 51840, while the sum is 38.

The square root of 65238419 is about 8077.0303329875. The cubic root of 65238419 is about 402.5635746961.

The spelling of 65238419 in words is "sixty-five million, two hundred thirty-eight thousand, four hundred nineteen".