19316057 has 2 divisors, whose sum is σ = 19316058. Its totient is φ = 19316056.

The previous prime is 19316039. The next prime is 19316119. The reversal of 19316057 is 75061391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14167696 + 5148361 = 3764^2 + 2269^2 .

It is a cyclic number.

It is not a de Polignac number, because 19316057 - 2⁸ = 19315801 is a prime.

It is a super-2 number, since 2×19316057² = 746220116054498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19316657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9658028 + 9658029.

It is an arithmetic number, because the mean of its divisors is an integer number (9658029).

Almost surely, 2^19316057 is an apocalyptic number.

It is an amenable number.

19316057 is a deficient number, since it is larger than the sum of its proper divisors (1).

19316057 is an equidigital number, since it uses as much as digits as its factorization.

19316057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 19316057 is about 4395.0036404991. The cubic root of 19316057 is about 268.3116269965.

Subtracting from 19316057 its sum of digits (32), we obtain a square (19316025 = 4395²).

The spelling of 19316057 in words is "nineteen million, three hundred sixteen thousand, fifty-seven".