4646369781 has 6 divisors (see below), whose sum is σ = 6711423030. Its totient is φ = 3097579848.

The previous prime is 4646369759. The next prime is 4646369809. The reversal of 4646369781 is 1879636464.

4646369781 is a `hidden beast` number, since 46 + 463 + 69 + 7 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4575304881 + 71064900 = 67641^2 + 8430^2 .

It is not a de Polignac number, because 4646369781 - 2¹⁰ = 4646368757 is a prime.

It is a super-3 number, since 3×4646369781³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4646364781) 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, 258131646 + ... + 258131663.

It is an arithmetic number, because the mean of its divisors is an integer number (1118570505).

Almost surely, 2^4646369781 is an apocalyptic number.

It is an amenable number.

4646369781 is a deficient number, since it is larger than the sum of its proper divisors (2065053249).

4646369781 is a wasteful number, since it uses less digits than its factorization.

4646369781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516263315 (or 516263312 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 4646369781 is about 68164.2852306103. The cubic root of 4646369781 is about 1668.6730684729.

The spelling of 4646369781 in words is "four billion, six hundred forty-six million, three hundred sixty-nine thousand, seven hundred eighty-one".