919872463 has 4 divisors (see below), whose sum is σ = 922478688. Its totient is φ = 917266240.

The previous prime is 919872461. The next prime is 919872491. The reversal of 919872463 is 364278919.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364278919 = 71 ⋅5130689.

It is a cyclic number.

It is not a de Polignac number, because 919872463 - 2¹ = 919872461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919872461) 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 3 ways as a sum of consecutive naturals, for example, 1302583 + ... + 1303288.

It is an arithmetic number, because the mean of its divisors is an integer number (230619672).

Almost surely, 2^919872463 is an apocalyptic number.

919872463 is a deficient number, since it is larger than the sum of its proper divisors (2606225).

919872463 is a wasteful number, since it uses less digits than its factorization.

919872463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606224.

The product of its digits is 653184, while the sum is 49.

The square root of 919872463 is about 30329.3993181533. The cubic root of 919872463 is about 972.5438817285.

The spelling of 919872463 in words is "nine hundred nineteen million, eight hundred seventy-two thousand, four hundred sixty-three".