38454981 has 8 divisors (see below), whose sum is σ = 51380544. Its totient is φ = 25583040.

The previous prime is 38454967. The next prime is 38454989. The reversal of 38454981 is 18945483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38454981 - 2¹⁰ = 38453957 is a prime.

It is a super-2 number, since 2×38454981² = 2957571127420722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38454989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11700 + ... + 14621.

It is an arithmetic number, because the mean of its divisors is an integer number (6422568).

Almost surely, 2^38454981 is an apocalyptic number.

It is an amenable number.

38454981 is a deficient number, since it is larger than the sum of its proper divisors (12925563).

38454981 is a wasteful number, since it uses less digits than its factorization.

38454981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26811.

The product of its digits is 138240, while the sum is 42.

The square root of 38454981 is about 6201.2080274734. The cubic root of 38454981 is about 337.5340059014.

The spelling of 38454981 in words is "thirty-eight million, four hundred fifty-four thousand, nine hundred eighty-one".