65193019 has 2 divisors, whose sum is σ = 65193020. Its totient is φ = 65193018.

The previous prime is 65192989. The next prime is 65193041. The reversal of 65193019 is 91039156.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65193019 is a prime.

It is a super-2 number, since 2×65193019² = 8500259452668722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65193059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32596509 + 32596510.

It is an arithmetic number, because the mean of its divisors is an integer number (32596510).

Almost surely, 2^65193019 is an apocalyptic number.

65193019 is a deficient number, since it is larger than the sum of its proper divisors (1).

65193019 is an equidigital number, since it uses as much as digits as its factorization.

65193019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 65193019 is about 8074.2194049951. The cubic root of 65193019 is about 402.4701704936.

The spelling of 65193019 in words is "sixty-five million, one hundred ninety-three thousand, nineteen".