4915091623 has 4 divisors (see below), whose sum is σ = 5293175608. Its totient is φ = 4537007640.

The previous prime is 4915091609. The next prime is 4915091639. The reversal of 4915091623 is 3261905194.

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 4915091623 - 2⁵ = 4915091591 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 (4915094623) 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, 189041973 + ... + 189041998.

It is an arithmetic number, because the mean of its divisors is an integer number (1323293902).

Almost surely, 2^4915091623 is an apocalyptic number.

4915091623 is a deficient number, since it is larger than the sum of its proper divisors (378083985).

4915091623 is a wasteful number, since it uses less digits than its factorization.

4915091623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378083984.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 4915091623 is about 70107.7144328639. The cubic root of 4915091623 is about 1700.2412140999.

The spelling of 4915091623 in words is "four billion, nine hundred fifteen million, ninety-one thousand, six hundred twenty-three".