19117057 has 2 divisors, whose sum is σ = 19117058. Its totient is φ = 19117056.

The previous prime is 19117037. The next prime is 19117067. The reversal of 19117057 is 75071191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12362256 + 6754801 = 3516^2 + 2599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19117057 is a prime.

It is not a weakly prime, because it can be changed into another prime (19117037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9558528 + 9558529.

It is an arithmetic number, because the mean of its divisors is an integer number (9558529).

Almost surely, 2^19117057 is an apocalyptic number.

It is an amenable number.

19117057 is a deficient number, since it is larger than the sum of its proper divisors (1).

19117057 is an equidigital number, since it uses as much as digits as its factorization.

19117057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2205, while the sum is 31.

The square root of 19117057 is about 4372.3056846474. The cubic root of 19117057 is about 267.3870347250.

The spelling of 19117057 in words is "nineteen million, one hundred seventeen thousand, fifty-seven".