4764781961 has 4 divisors (see below), whose sum is σ = 4764957252. Its totient is φ = 4764606672.

The previous prime is 4764781951. The next prime is 4764781979. The reversal of 4764781961 is 1691874674.

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 1715533561 + 3049248400 = 41419^2 + 55220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4764781961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4764781951) 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, 37190 + ... + 104463.

It is an arithmetic number, because the mean of its divisors is an integer number (1191239313).

Almost surely, 2^4764781961 is an apocalyptic number.

It is an amenable number.

4764781961 is a deficient number, since it is larger than the sum of its proper divisors (175291).

4764781961 is a wasteful number, since it uses less digits than its factorization.

4764781961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175290.

The product of its digits is 2032128, while the sum is 53.

The square root of 4764781961 is about 69027.4000741734. The cubic root of 4764781961 is about 1682.7296376625.

The spelling of 4764781961 in words is "four billion, seven hundred sixty-four million, seven hundred eighty-one thousand, nine hundred sixty-one".