19461242153 has 2 divisors, whose sum is σ = 19461242154. Its totient is φ = 19461242152.

The previous prime is 19461242137. The next prime is 19461242159. The reversal of 19461242153 is 35124216491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16014143209 + 3447098944 = 126547^2 + 58712^2 .

It is a cyclic number.

It is not a de Polignac number, because 19461242153 - 2⁴ = 19461242137 is a prime.

It is a super-2 number, since 2×19461242153² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19461242159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9730621076 + 9730621077.

It is an arithmetic number, because the mean of its divisors is an integer number (9730621077).

Almost surely, 2^19461242153 is an apocalyptic number.

It is an amenable number.

19461242153 is a deficient number, since it is larger than the sum of its proper divisors (1).

19461242153 is an equidigital number, since it uses as much as digits as its factorization.

19461242153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The spelling of 19461242153 in words is "nineteen billion, four hundred sixty-one million, two hundred forty-two thousand, one hundred fifty-three".