1868726473 has 2 divisors, whose sum is σ = 1868726474. Its totient is φ = 1868726472.

The previous prime is 1868726467. The next prime is 1868726597. The reversal of 1868726473 is 3746278681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1865203344 + 3523129 = 43188^2 + 1877^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868726473 - 2²¹ = 1866629321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1868726473.

It is not a weakly prime, because it can be changed into another prime (1868736473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934363236 + 934363237.

It is an arithmetic number, because the mean of its divisors is an integer number (934363237).

Almost surely, 2^1868726473 is an apocalyptic number.

It is an amenable number.

1868726473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868726473 is an equidigital number, since it uses as much as digits as its factorization.

1868726473 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 1868726473 is about 43228.7690433119. The cubic root of 1868726473 is about 1231.7292250908.

The spelling of 1868726473 in words is "one billion, eight hundred sixty-eight million, seven hundred twenty-six thousand, four hundred seventy-three".