145197379 has 2 divisors, whose sum is σ = 145197380. Its totient is φ = 145197378.

The previous prime is 145197347. The next prime is 145197389. The reversal of 145197379 is 973791541.

It is a strong prime.

It is an emirp because it is prime and its reverse (973791541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145197379 - 2⁵ = 145197347 is a prime.

It is not a weakly prime, because it can be changed into another prime (145197389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72598689 + 72598690.

It is an arithmetic number, because the mean of its divisors is an integer number (72598690).

Almost surely, 2^145197379 is an apocalyptic number.

145197379 is a deficient number, since it is larger than the sum of its proper divisors (1).

145197379 is an equidigital number, since it uses as much as digits as its factorization.

145197379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 46.

The square root of 145197379 is about 12049.7875084999. The cubic root of 145197379 is about 525.5970580002.

The spelling of 145197379 in words is "one hundred forty-five million, one hundred ninety-seven thousand, three hundred seventy-nine".