145137919 has 2 divisors, whose sum is σ = 145137920. Its totient is φ = 145137918.

The previous prime is 145137893. The next prime is 145137947. The reversal of 145137919 is 919731541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145137919 - 2⁹ = 145137407 is a prime.

It is a super-2 number, since 2×145137919² = 42130031063301122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145137019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72568959 + 72568960.

It is an arithmetic number, because the mean of its divisors is an integer number (72568960).

Almost surely, 2^145137919 is an apocalyptic number.

145137919 is a deficient number, since it is larger than the sum of its proper divisors (1).

145137919 is an equidigital number, since it uses as much as digits as its factorization.

145137919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 145137919 is about 12047.3199924299. The cubic root of 145137919 is about 525.5253021869.

The spelling of 145137919 in words is "one hundred forty-five million, one hundred thirty-seven thousand, nine hundred nineteen".