4519779640 has 16 divisors (see below), whose sum is σ = 10169504280. Its totient is φ = 1807911840.

The previous prime is 4519779637. The next prime is 4519779661. The reversal of 4519779640 is 469779154.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56497206 + ... + 56497285.

Almost surely, 2^4519779640 is an apocalyptic number.

4519779640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4519779640 is an abundant number, since it is smaller than the sum of its proper divisors (5649724640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4519779640 is a wasteful number, since it uses less digits than its factorization.

4519779640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112994502 (or 112994498 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 4519779640 is about 67229.3064072507. The cubic root of 4519779640 is about 1653.3790123884.

The spelling of 4519779640 in words is "four billion, five hundred nineteen million, seven hundred seventy-nine thousand, six hundred forty".