745542739 has 2 divisors, whose sum is σ = 745542740. Its totient is φ = 745542738.

The previous prime is 745542713. The next prime is 745542751. The reversal of 745542739 is 937245547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 745542739 - 2⁹ = 745542227 is a prime.

It is not a weakly prime, because it can be changed into another prime (745542779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372771369 + 372771370.

It is an arithmetic number, because the mean of its divisors is an integer number (372771370).

Almost surely, 2^745542739 is an apocalyptic number.

745542739 is a deficient number, since it is larger than the sum of its proper divisors (1).

745542739 is an equidigital number, since it uses as much as digits as its factorization.

745542739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 46.

The square root of 745542739 is about 27304.6285270465. The cubic root of 745542739 is about 906.7568566717.

The spelling of 745542739 in words is "seven hundred forty-five million, five hundred forty-two thousand, seven hundred thirty-nine".