19056157 has 2 divisors, whose sum is σ = 19056158. Its totient is φ = 19056156.

The previous prime is 19056137. The next prime is 19056173. The reversal of 19056157 is 75165091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17589636 + 1466521 = 4194^2 + 1211^2 .

It is an emirp because it is prime and its reverse (75165091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19056157 - 2²³ = 10667549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19056127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9528078 + 9528079.

It is an arithmetic number, because the mean of its divisors is an integer number (9528079).

Almost surely, 2^19056157 is an apocalyptic number.

It is an amenable number.

19056157 is a deficient number, since it is larger than the sum of its proper divisors (1).

19056157 is an equidigital number, since it uses as much as digits as its factorization.

19056157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 19056157 is about 4365.3358404595. The cubic root of 19056157 is about 267.1028000302.

The spelling of 19056157 in words is "nineteen million, fifty-six thousand, one hundred fifty-seven".