945491519 has 8 divisors (see below), whose sum is σ = 1081297440. Its totient is φ = 809869536.

The previous prime is 945491497. The next prime is 945491531. The reversal of 945491519 is 915194549.

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

It is not a de Polignac number, because 945491519 - 2¹² = 945487423 is a prime.

It is a super-2 number, since 2×945491519² = 1787908425001854722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945491549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34784 + ... + 55685.

It is an arithmetic number, because the mean of its divisors is an integer number (135162180).

Almost surely, 2^945491519 is an apocalyptic number.

945491519 is a deficient number, since it is larger than the sum of its proper divisors (135805921).

945491519 is a wasteful number, since it uses less digits than its factorization.

945491519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91969.

The product of its digits is 291600, while the sum is 47.

The square root of 945491519 is about 30748.8458157375. The cubic root of 945491519 is about 981.4900002069.

The spelling of 945491519 in words is "nine hundred forty-five million, four hundred ninety-one thousand, five hundred nineteen".