1864724497 has 2 divisors, whose sum is σ = 1864724498. Its totient is φ = 1864724496.

The previous prime is 1864724473. The next prime is 1864724539. The reversal of 1864724497 is 7944274681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1120307841 + 744416656 = 33471^2 + 27284^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864724497 - 2¹¹ = 1864722449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1864724297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932362248 + 932362249.

It is an arithmetic number, because the mean of its divisors is an integer number (932362249).

Almost surely, 2^1864724497 is an apocalyptic number.

It is an amenable number.

1864724497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864724497 is an equidigital number, since it uses as much as digits as its factorization.

1864724497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 52.

The square root of 1864724497 is about 43182.4558935686. The cubic root of 1864724497 is about 1230.8493257079.

It can be divided in two parts, 186472 and 4497, that added together give a square (190969 = 437²).

The spelling of 1864724497 in words is "one billion, eight hundred sixty-four million, seven hundred twenty-four thousand, four hundred ninety-seven".