4781919 has 8 divisors (see below), whose sum is σ = 6388272. Its totient is φ = 3181760.

The previous prime is 4781911. The next prime is 4781923. The reversal of 4781919 is 9191874.

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 not a de Polignac number, because 4781919 - 2³ = 4781911 is a prime.

It is a super-2 number, since 2×4781919² = 45733498645122, which contains 22 as substring.

It is an Ulam number.

4781919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4781911) 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, 739 + ... + 3179.

It is an arithmetic number, because the mean of its divisors is an integer number (798534).

Almost surely, 2^4781919 is an apocalyptic number.

4781919 is a deficient number, since it is larger than the sum of its proper divisors (1606353).

4781919 is a wasteful number, since it uses less digits than its factorization.

4781919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097.

The product of its digits is 18144, while the sum is 39.

The square root of 4781919 is about 2186.7599319541. The cubic root of 4781919 is about 168.4744595241.

The spelling of 4781919 in words is "four million, seven hundred eighty-one thousand, nine hundred nineteen".