383254981891 has 2 divisors, whose sum is σ = 383254981892. Its totient is φ = 383254981890.

The previous prime is 383254981871. The next prime is 383254981931. The reversal of 383254981891 is 198189452383.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 383254981891 - 2¹⁵ = 383254949123 is a prime.

It is a super-2 number, since 2×383254981891² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (383254981871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191627490945 + 191627490946.

It is an arithmetic number, because the mean of its divisors is an integer number (191627490946).

Almost surely, 2^383254981891 is an apocalyptic number.

383254981891 is a deficient number, since it is larger than the sum of its proper divisors (1).

383254981891 is an equidigital number, since it uses as much as digits as its factorization.

383254981891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 61.

The spelling of 383254981891 in words is "three hundred eighty-three billion, two hundred fifty-four million, nine hundred eighty-one thousand, eight hundred ninety-one".