38694801457 has 4 divisors (see below), whose sum is σ = 41671324660. Its totient is φ = 35718278256.

The previous prime is 38694801451. The next prime is 38694801469. The reversal of 38694801457 is 75410849683.

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 5512171536 + 33182629921 = 74244^2 + 182161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38694801457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38694801398 and 38694801407.

It is not an unprimeable number, because it can be changed into a prime (38694801451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488261582 + ... + 1488261607.

It is an arithmetic number, because the mean of its divisors is an integer number (10417831165).

Almost surely, 2^38694801457 is an apocalyptic number.

It is an amenable number.

38694801457 is a deficient number, since it is larger than the sum of its proper divisors (2976523203).

38694801457 is a wasteful number, since it uses less digits than its factorization.

38694801457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976523202.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 38694801457 in words is "thirty-eight billion, six hundred ninety-four million, eight hundred one thousand, four hundred fifty-seven".