19742963 has 2 divisors, whose sum is σ = 19742964. Its totient is φ = 19742962.

The previous prime is 19742953. The next prime is 19742999. The reversal of 19742963 is 36924791.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19742963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19742963.

It is not a weakly prime, because it can be changed into another prime (19742903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9871481 + 9871482.

It is an arithmetic number, because the mean of its divisors is an integer number (9871482).

Almost surely, 2^19742963 is an apocalyptic number.

19742963 is a deficient number, since it is larger than the sum of its proper divisors (1).

19742963 is an equidigital number, since it uses as much as digits as its factorization.

19742963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 19742963 is about 4443.3054137657. The cubic root of 19742963 is about 270.2739012881.

The spelling of 19742963 in words is "nineteen million, seven hundred forty-two thousand, nine hundred sixty-three".