38218149 has 20 divisors (see below), whose sum is σ = 57402400. Its totient is φ = 25340040.

The previous prime is 38218127. The next prime is 38218171. The reversal of 38218149 is 94181283.

It is an interprime number because it is at equal distance from previous prime (38218127) and next prime (38218171).

It is not a de Polignac number, because 38218149 - 2¹³ = 38209957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38218199) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14934 + ... + 17304.

It is an arithmetic number, because the mean of its divisors is an integer number (2870120).

Almost surely, 2^38218149 is an apocalyptic number.

It is an amenable number.

38218149 is a deficient number, since it is larger than the sum of its proper divisors (19184251).

38218149 is a wasteful number, since it uses less digits than its factorization.

38218149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2573 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 38218149 is about 6182.0829014176. The cubic root of 38218149 is about 336.8396569822.

The spelling of 38218149 in words is "thirty-eight million, two hundred eighteen thousand, one hundred forty-nine".