19625100749 has 2 divisors, whose sum is σ = 19625100750. Its totient is φ = 19625100748.

The previous prime is 19625100739. The next prime is 19625100757. The reversal of 19625100749 is 94700152691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10548727849 + 9076372900 = 102707^2 + 95270^2 .

It is a cyclic number.

It is not a de Polignac number, because 19625100749 - 2⁸ = 19625100493 is a prime.

It is a super-2 number, since 2×19625100749² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19625100739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9812550374 + 9812550375.

It is an arithmetic number, because the mean of its divisors is an integer number (9812550375).

Almost surely, 2^19625100749 is an apocalyptic number.

It is an amenable number.

19625100749 is a deficient number, since it is larger than the sum of its proper divisors (1).

19625100749 is an equidigital number, since it uses as much as digits as its factorization.

19625100749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 19625100749 in words is "nineteen billion, six hundred twenty-five million, one hundred thousand, seven hundred forty-nine".