734321819 has 16 divisors (see below), whose sum is σ = 928066560. Its totient is φ = 564356160.

The previous prime is 734321807. The next prime is 734321821. The reversal of 734321819 is 918123437.

It is a cyclic number.

It is not a de Polignac number, because 734321819 - 2²⁴ = 717544603 is a prime.

It is a super-2 number, since 2×734321819² = 1078457067718937522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (734320819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59699 + ... + 70940.

It is an arithmetic number, because the mean of its divisors is an integer number (58004160).

Almost surely, 2^734321819 is an apocalyptic number.

734321819 is a deficient number, since it is larger than the sum of its proper divisors (193744741).

734321819 is a wasteful number, since it uses less digits than its factorization.

734321819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130730.

The product of its digits is 36288, while the sum is 38.

The square root of 734321819 is about 27098.3729954402. The cubic root of 734321819 is about 902.1847412417.

The spelling of 734321819 in words is "seven hundred thirty-four million, three hundred twenty-one thousand, eight hundred nineteen".