19292993 has 2 divisors, whose sum is σ = 19292994. Its totient is φ = 19292992.

The previous prime is 19292989. The next prime is 19293023. The reversal of 19292993 is 39929291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17833729 + 1459264 = 4223^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 19292993 - 2² = 19292989 is a prime.

It is not a weakly prime, because it can be changed into another prime (19292953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9646496 + 9646497.

It is an arithmetic number, because the mean of its divisors is an integer number (9646497).

Almost surely, 2^19292993 is an apocalyptic number.

It is an amenable number.

19292993 is a deficient number, since it is larger than the sum of its proper divisors (1).

19292993 is an equidigital number, since it uses as much as digits as its factorization.

19292993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 44.

The square root of 19292993 is about 4392.3789681675. The cubic root of 19292993 is about 268.2047935293.

The spelling of 19292993 in words is "nineteen million, two hundred ninety-two thousand, nine hundred ninety-three".