64130519 has 4 divisors (see below), whose sum is σ = 65694720. Its totient is φ = 62566320.

The previous prime is 64130497. The next prime is 64130533. The reversal of 64130519 is 91503146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64130519 - 2¹² = 64126423 is a prime.

It is a super-2 number, since 2×64130519² = 8225446934418722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64130491 and 64130500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64160519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782039 + ... + 782120.

It is an arithmetic number, because the mean of its divisors is an integer number (16423680).

Almost surely, 2^64130519 is an apocalyptic number.

64130519 is a deficient number, since it is larger than the sum of its proper divisors (1564201).

64130519 is a wasteful number, since it uses less digits than its factorization.

64130519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564200.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 64130519 is about 8008.1532827488. The cubic root of 64130519 is about 400.2717299486.

The spelling of 64130519 in words is "sixty-four million, one hundred thirty thousand, five hundred nineteen".