398051734191 has 4 divisors (see below), whose sum is σ = 530735645592. Its totient is φ = 265367822792.

The previous prime is 398051734189. The next prime is 398051734193. The reversal of 398051734191 is 191437150893.

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

It is an interprime number because it is at equal distance from previous prime (398051734189) and next prime (398051734193).

It is a cyclic number.

It is not a de Polignac number, because 398051734191 - 2¹ = 398051734189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398051734193) 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, 66341955696 + ... + 66341955701.

It is an arithmetic number, because the mean of its divisors is an integer number (132683911398).

Almost surely, 2^398051734191 is an apocalyptic number.

398051734191 is a deficient number, since it is larger than the sum of its proper divisors (132683911401).

398051734191 is a wasteful number, since it uses less digits than its factorization.

398051734191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132683911400.

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 398051734191 in words is "three hundred ninety-eight billion, fifty-one million, seven hundred thirty-four thousand, one hundred ninety-one".