398265721602 has 32 divisors (see below), whose sum is σ = 939686866944. Its totient is φ = 110119554000.

The previous prime is 398265721591. The next prime is 398265721603. The reversal of 398265721602 is 206127562893.

It is a happy number.

It is a super-3 number, since 3×398265721602³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (398265721603) 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 in 15 ways as a sum of consecutive naturals, for example, 152942524 + ... + 152945127.

It is an arithmetic number, because the mean of its divisors is an integer number (29365214592).

Almost surely, 2^398265721602 is an apocalyptic number.

398265721602 is an abundant number, since it is smaller than the sum of its proper divisors (541421145342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398265721602 is a wasteful number, since it uses less digits than its factorization.

398265721602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305887694.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 398265721602 in words is "three hundred ninety-eight billion, two hundred sixty-five million, seven hundred twenty-one thousand, six hundred two".