722051918 has 16 divisors (see below), whose sum is σ = 1280486880. Its totient is φ = 298779936.

The previous prime is 722051909. The next prime is 722051921. The reversal of 722051918 is 819150227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888821 + ... + 889632.

It is an arithmetic number, because the mean of its divisors is an integer number (80030430).

Almost surely, 2^722051918 is an apocalyptic number.

722051918 is a deficient number, since it is larger than the sum of its proper divisors (558434962).

722051918 is a wasteful number, since it uses less digits than its factorization.

722051918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778491.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 722051918 is about 26871.0237616657. The cubic root of 722051918 is about 897.1315746371.

The spelling of 722051918 in words is "seven hundred twenty-two million, fifty-one thousand, nine hundred eighteen".