38496781 has 4 divisors (see below), whose sum is σ = 38856672. Its totient is φ = 38136892.

The previous prime is 38496767. The next prime is 38496791. The reversal of 38496781 is 18769483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38496781 is a prime.

It is a super-2 number, since 2×38496781² = 2964004294723922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38496791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179785 + ... + 179998.

It is an arithmetic number, because the mean of its divisors is an integer number (9714168).

Almost surely, 2^38496781 is an apocalyptic number.

It is an amenable number.

38496781 is a deficient number, since it is larger than the sum of its proper divisors (359891).

38496781 is a wasteful number, since it uses less digits than its factorization.

38496781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359890.

The product of its digits is 290304, while the sum is 46.

The square root of 38496781 is about 6204.5774231611. The cubic root of 38496781 is about 337.6562597863.

The spelling of 38496781 in words is "thirty-eight million, four hundred ninety-six thousand, seven hundred eighty-one".