19461242851 has 2 divisors, whose sum is σ = 19461242852. Its totient is φ = 19461242850.

The previous prime is 19461242821. The next prime is 19461242863. The reversal of 19461242851 is 15824216491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19461242851 - 2¹³ = 19461234659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19461242798 and 19461242807.

It is not a weakly prime, because it can be changed into another prime (19461242821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9730621425 + 9730621426.

It is an arithmetic number, because the mean of its divisors is an integer number (9730621426).

Almost surely, 2^19461242851 is an apocalyptic number.

19461242851 is a deficient number, since it is larger than the sum of its proper divisors (1).

19461242851 is an equidigital number, since it uses as much as digits as its factorization.

19461242851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 43.

The spelling of 19461242851 in words is "nineteen billion, four hundred sixty-one million, two hundred forty-two thousand, eight hundred fifty-one".