381470436491 has 4 divisors (see below), whose sum is σ = 381505596192. Its totient is φ = 381435276792.

The previous prime is 381470436383. The next prime is 381470436499. The reversal of 381470436491 is 194634074183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194634074183 = 227 ⋅857418829.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381470436491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381470436499) 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 3 ways as a sum of consecutive naturals, for example, 17563571 + ... + 17585276.

It is an arithmetic number, because the mean of its divisors is an integer number (95376399048).

Almost surely, 2^381470436491 is an apocalyptic number.

381470436491 is a deficient number, since it is larger than the sum of its proper divisors (35159701).

381470436491 is a wasteful number, since it uses less digits than its factorization.

381470436491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35159700.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 381470436491 in words is "three hundred eighty-one billion, four hundred seventy million, four hundred thirty-six thousand, four hundred ninety-one".