738721693 has 2 divisors, whose sum is σ = 738721694. Its totient is φ = 738721692.

The previous prime is 738721679. The next prime is 738721741. The reversal of 738721693 is 396127837.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713851524 + 24870169 = 26718^2 + 4987^2 .

It is a cyclic number.

It is not a de Polignac number, because 738721693 - 2¹³ = 738713501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (738701693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369360846 + 369360847.

It is an arithmetic number, because the mean of its divisors is an integer number (369360847).

Almost surely, 2^738721693 is an apocalyptic number.

It is an amenable number.

738721693 is a deficient number, since it is larger than the sum of its proper divisors (1).

738721693 is an equidigital number, since it uses as much as digits as its factorization.

738721693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 738721693 is about 27179.4351118635. The cubic root of 738721693 is about 903.9830433326.

The spelling of 738721693 in words is "seven hundred thirty-eight million, seven hundred twenty-one thousand, six hundred ninety-three".