745138379 has 2 divisors, whose sum is σ = 745138380. Its totient is φ = 745138378.

The previous prime is 745138343. The next prime is 745138391. The reversal of 745138379 is 973831547.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745138379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (745138319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372569189 + 372569190.

It is an arithmetic number, because the mean of its divisors is an integer number (372569190).

Almost surely, 2^745138379 is an apocalyptic number.

745138379 is a deficient number, since it is larger than the sum of its proper divisors (1).

745138379 is an equidigital number, since it uses as much as digits as its factorization.

745138379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 745138379 is about 27297.2229173592. Note that the first 3 decimals coincide. The cubic root of 745138379 is about 906.5928944595.

The spelling of 745138379 in words is "seven hundred forty-five million, one hundred thirty-eight thousand, three hundred seventy-nine".