4836400781 has 4 divisors (see below), whose sum is σ = 4837532700. Its totient is φ = 4835268864.

The previous prime is 4836400769. The next prime is 4836400783. The reversal of 4836400781 is 1870046384.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4172514025 + 663886756 = 64595^2 + 25766^2 .

It is a cyclic number.

It is not a de Polignac number, because 4836400781 - 2⁶ = 4836400717 is a prime.

It is a super-2 number, since 2×4836400781² = 46781545028914819922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4836400783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559526 + ... + 568103.

It is an arithmetic number, because the mean of its divisors is an integer number (1209383175).

Almost surely, 2^4836400781 is an apocalyptic number.

It is an amenable number.

4836400781 is a deficient number, since it is larger than the sum of its proper divisors (1131919).

4836400781 is a wasteful number, since it uses less digits than its factorization.

4836400781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131918.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 4836400781 is about 69544.2361450609. The cubic root of 4836400781 is about 1691.1187090140.

The spelling of 4836400781 in words is "four billion, eight hundred thirty-six million, four hundred thousand, seven hundred eighty-one".