145744387 has 2 divisors, whose sum is σ = 145744388. Its totient is φ = 145744386.

The previous prime is 145744297. The next prime is 145744397. The reversal of 145744387 is 783447541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145744387 is a prime.

It is not a weakly prime, because it can be changed into another prime (145744397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72872193 + 72872194.

It is an arithmetic number, because the mean of its divisors is an integer number (72872194).

Almost surely, 2^145744387 is an apocalyptic number.

145744387 is a deficient number, since it is larger than the sum of its proper divisors (1).

145744387 is an equidigital number, since it uses as much as digits as its factorization.

145744387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 43.

The square root of 145744387 is about 12072.4639987038. The cubic root of 145744387 is about 526.2562652741.

The spelling of 145744387 in words is "one hundred forty-five million, seven hundred forty-four thousand, three hundred eighty-seven".