743385491 has 2 divisors, whose sum is σ = 743385492. Its totient is φ = 743385490.

The previous prime is 743385481. The next prime is 743385509. The reversal of 743385491 is 194583347.

743385491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-743385491 is a prime.

It is a super-2 number, since 2×743385491² = 1105243976458622162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (743385421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371692745 + 371692746.

It is an arithmetic number, because the mean of its divisors is an integer number (371692746).

Almost surely, 2^743385491 is an apocalyptic number.

743385491 is a deficient number, since it is larger than the sum of its proper divisors (1).

743385491 is an equidigital number, since it uses as much as digits as its factorization.

743385491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 743385491 is about 27265.0965705240. The cubic root of 743385491 is about 905.8814366467.

The spelling of 743385491 in words is "seven hundred forty-three million, three hundred eighty-five thousand, four hundred ninety-one".