155190319 has 2 divisors, whose sum is σ = 155190320. Its totient is φ = 155190318.

The previous prime is 155190293. The next prime is 155190353. The reversal of 155190319 is 913091551.

It is an a-pointer prime, because the next prime (155190353) can be obtained adding 155190319 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155190319 is a prime.

It is a super-2 number, since 2×155190319² = 48168070222643522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155190359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77595159 + 77595160.

It is an arithmetic number, because the mean of its divisors is an integer number (77595160).

Almost surely, 2^155190319 is an apocalyptic number.

155190319 is a deficient number, since it is larger than the sum of its proper divisors (1).

155190319 is an equidigital number, since it uses as much as digits as its factorization.

155190319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6075, while the sum is 34.

The square root of 155190319 is about 12457.5406481376. The cubic root of 155190319 is about 537.3883022990.

The spelling of 155190319 in words is "one hundred fifty-five million, one hundred ninety thousand, three hundred nineteen".