65019381 has 8 divisors (see below), whose sum is σ = 99077184. Its totient is φ = 37153920.

The previous prime is 65019359. The next prime is 65019389. The reversal of 65019381 is 18391056.

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

It is not a de Polignac number, because 65019381 - 2⁹ = 65018869 is a prime.

It is a super-2 number, since 2×65019381² = 8455039811246322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65019389) 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, 1548060 + ... + 1548101.

It is an arithmetic number, because the mean of its divisors is an integer number (12384648).

Almost surely, 2^65019381 is an apocalyptic number.

It is an amenable number.

65019381 is a deficient number, since it is larger than the sum of its proper divisors (34057803).

65019381 is a wasteful number, since it uses less digits than its factorization.

65019381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096171.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 65019381 is about 8063.4596173107. The cubic root of 65019381 is about 402.1125337780.

The spelling of 65019381 in words is "sixty-five million, nineteen thousand, three hundred eighty-one".