2473519681 has 2 divisors, whose sum is σ = 2473519682. Its totient is φ = 2473519680.

The previous prime is 2473519679. The next prime is 2473519721. The reversal of 2473519681 is 1869153742.

2473519681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1359028225 + 1114491456 = 36865^2 + 33384^2 .

It is a cyclic number.

It is not a de Polignac number, because 2473519681 - 2¹ = 2473519679 is a prime.

It is a super-2 number, since 2×2473519681² = 12236599224588683522, which contains 22 as substring.

Together with 2473519679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2473519651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1236759840 + 1236759841.

It is an arithmetic number, because the mean of its divisors is an integer number (1236759841).

Almost surely, 2^2473519681 is an apocalyptic number.

It is an amenable number.

2473519681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2473519681 is an equidigital number, since it uses as much as digits as its factorization.

2473519681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 2473519681 is about 49734.4918642988. The cubic root of 2473519681 is about 1352.3998795646.

It can be divided in two parts, 2473519 and 681, that added together give a triangular number (2474200 = T₂₂₂₄).

The spelling of 2473519681 in words is "two billion, four hundred seventy-three million, five hundred nineteen thousand, six hundred eighty-one".