378472846891 has 2 divisors, whose sum is σ = 378472846892. Its totient is φ = 378472846890.

The previous prime is 378472846853. The next prime is 378472846901. The reversal of 378472846891 is 198648274873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378472846891 - 2⁹ = 378472846379 is a prime.

It is a super-3 number, since 3×378472846891³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (378472846091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189236423445 + 189236423446.

It is an arithmetic number, because the mean of its divisors is an integer number (189236423446).

Almost surely, 2^378472846891 is an apocalyptic number.

378472846891 is a deficient number, since it is larger than the sum of its proper divisors (1).

378472846891 is an equidigital number, since it uses as much as digits as its factorization.

378472846891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130056192, while the sum is 67.

The spelling of 378472846891 in words is "three hundred seventy-eight billion, four hundred seventy-two million, eight hundred forty-six thousand, eight hundred ninety-one".