38291854465 has 4 divisors (see below), whose sum is σ = 45950225364. Its totient is φ = 30633483568.

The previous prime is 38291854457. The next prime is 38291854481. The reversal of 38291854465 is 56445819283.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28277449281 + 10014405184 = 168159^2 + 100072^2 .

It is a cyclic number.

It is not a de Polignac number, because 38291854465 - 2³ = 38291854457 is a prime.

It is a super-2 number, since 2×38291854465² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3829185442 + ... + 3829185451.

It is an arithmetic number, because the mean of its divisors is an integer number (11487556341).

Almost surely, 2^38291854465 is an apocalyptic number.

It is an amenable number.

38291854465 is a deficient number, since it is larger than the sum of its proper divisors (7658370899).

38291854465 is an equidigital number, since it uses as much as digits as its factorization.

38291854465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658370898.

The product of its digits is 8294400, while the sum is 55.

The spelling of 38291854465 in words is "thirty-eight billion, two hundred ninety-one million, eight hundred fifty-four thousand, four hundred sixty-five".