994361623 has 2 divisors, whose sum is σ = 994361624. Its totient is φ = 994361622.

The previous prime is 994361609. The next prime is 994361681. The reversal of 994361623 is 326163499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 994361623 - 2¹³ = 994353431 is a prime.

It is the 31534-th Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 994361623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994361023) by changing a digit.

It is a nontrivial repunit in base 31533.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497180811 + 497180812.

It is an arithmetic number, because the mean of its divisors is an integer number (497180812).

Almost surely, 2^994361623 is an apocalyptic number.

994361623 is a deficient number, since it is larger than the sum of its proper divisors (1).

994361623 is an equidigital number, since it uses as much as digits as its factorization.

994361623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The square root of 994361623 is about 31533.5000118921. The cubic root of 994361623 is about 998.1169975272.

The spelling of 994361623 in words is "nine hundred ninety-four million, three hundred sixty-one thousand, six hundred twenty-three".