1294216493 has 2 divisors, whose sum is σ = 1294216494. Its totient is φ = 1294216492.

The previous prime is 1294216481. The next prime is 1294216541. The reversal of 1294216493 is 3946124921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 919484329 + 374732164 = 30323^2 + 19358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1294216493 - 2¹⁴ = 1294200109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1294216493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1294216093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647108246 + 647108247.

It is an arithmetic number, because the mean of its divisors is an integer number (647108247).

Almost surely, 2^1294216493 is an apocalyptic number.

It is an amenable number.

1294216493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294216493 is an equidigital number, since it uses as much as digits as its factorization.

1294216493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 1294216493 is about 35975.2205413671. The cubic root of 1294216493 is about 1089.7719953475.

The spelling of 1294216493 in words is "one billion, two hundred ninety-four million, two hundred sixteen thousand, four hundred ninety-three".