2516461812 has 18 divisors (see below), whose sum is σ = 6361056338. Its totient is φ = 838820592.

The previous prime is 2516461807. The next prime is 2516461819. The reversal of 2516461812 is 2181646152.

It is a happy number.

2516461812 is a `hidden beast` number, since 2 + 5 + 1 + 646 + 1 + 8 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1739390436 + 777071376 = 41706^2 + 27876^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 69901717 = 2516461812 / (2 + 5 + 1 + 6 + 4 + 6 + 1 + 8 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516461819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34950823 + ... + 34950894.

Almost surely, 2^2516461812 is an apocalyptic number.

It is an amenable number.

2516461812 is an abundant number, since it is smaller than the sum of its proper divisors (3844594526).

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

2516461812 is a wasteful number, since it uses less digits than its factorization.

2516461812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69901727 (or 69901722 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 2516461812 is about 50164.3480172921. The cubic root of 2516461812 is about 1360.1812424255.

The spelling of 2516461812 in words is "two billion, five hundred sixteen million, four hundred sixty-one thousand, eight hundred twelve".