398180920307 has 4 divisors (see below), whose sum is σ = 398182651920. Its totient is φ = 398179188696.

The previous prime is 398180920223. The next prime is 398180920351. The reversal of 398180920307 is 703029081893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 398180920307 - 2³⁰ = 397107178483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398180940307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456332 + ... + 1002297.

It is an arithmetic number, because the mean of its divisors is an integer number (99545662980).

Almost surely, 2^398180920307 is an apocalyptic number.

398180920307 is a deficient number, since it is larger than the sum of its proper divisors (1731613).

398180920307 is a wasteful number, since it uses less digits than its factorization.

398180920307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731612.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 398180920307 in words is "three hundred ninety-eight billion, one hundred eighty million, nine hundred twenty thousand, three hundred seven".