38481987 has 4 divisors (see below), whose sum is σ = 51309320. Its totient is φ = 25654656.

The previous prime is 38481941. The next prime is 38482019. The reversal of 38481987 is 78918483.

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

It is not a de Polignac number, because 38481987 - 2¹¹ = 38479939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38481907) 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, 6413662 + ... + 6413667.

It is an arithmetic number, because the mean of its divisors is an integer number (12827330).

Almost surely, 2^38481987 is an apocalyptic number.

38481987 is a deficient number, since it is larger than the sum of its proper divisors (12827333).

38481987 is a wasteful number, since it uses less digits than its factorization.

38481987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12827332.

The product of its digits is 387072, while the sum is 48.

The square root of 38481987 is about 6203.3851242688. The cubic root of 38481987 is about 337.6130013926.

The spelling of 38481987 in words is "thirty-eight million, four hundred eighty-one thousand, nine hundred eighty-seven".