4945113261 has 80 divisors (see below), whose sum is σ = 8628364800. Its totient is φ = 2790612000.

The previous prime is 4945113247. The next prime is 4945113281. The reversal of 4945113261 is 1623115494.

It is a happy number.

It is not a de Polignac number, because 4945113261 - 2¹⁹ = 4944588973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4945113281) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 996336 + ... + 1001286.

It is an arithmetic number, because the mean of its divisors is an integer number (107854560).

Almost surely, 2^4945113261 is an apocalyptic number.

It is an amenable number.

4945113261 is a deficient number, since it is larger than the sum of its proper divisors (3683251539).

4945113261 is a wasteful number, since it uses less digits than its factorization.

4945113261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052 (or 5043 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 4945113261 is about 70321.4992800921. The cubic root of 4945113261 is about 1703.6959106989.

The spelling of 4945113261 in words is "four billion, nine hundred forty-five million, one hundred thirteen thousand, two hundred sixty-one".