5209154820 has 96 divisors (see below), whose sum is σ = 16512128640. Its totient is φ = 1362890880.

The previous prime is 5209154803. The next prime is 5209154827. The reversal of 5209154820 is 284519025.

5209154820 is a `hidden beast` number, since 5 + 2 + 0 + 91 + 548 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5209154827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62386 + ... + 119625.

It is an arithmetic number, because the mean of its divisors is an integer number (172001340).

Almost surely, 2^5209154820 is an apocalyptic number.

It is an amenable number.

5209154820 is an abundant number, since it is smaller than the sum of its proper divisors (11302973820).

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

5209154820 is a wasteful number, since it uses less digits than its factorization.

5209154820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182082 (or 182074 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 5209154820 is about 72174.4748508779. The cubic root of 5209154820 is about 1733.4943150124.

The spelling of 5209154820 in words is "five billion, two hundred nine million, one hundred fifty-four thousand, eight hundred twenty".