38187145 has 16 divisors (see below), whose sum is σ = 47409408. Its totient is φ = 29505600.

The previous prime is 38187143. The next prime is 38187157. The reversal of 38187145 is 54178183.

It is not a de Polignac number, because 38187145 - 2¹ = 38187143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38187143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27252 + ... + 28618.

It is an arithmetic number, because the mean of its divisors is an integer number (2963088).

Almost surely, 2^38187145 is an apocalyptic number.

It is an amenable number.

38187145 is a deficient number, since it is larger than the sum of its proper divisors (9222263).

38187145 is a wasteful number, since it uses less digits than its factorization.

38187145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its digits is 26880, while the sum is 37.

The square root of 38187145 is about 6179.5748235619. The cubic root of 38187145 is about 336.7485466738.

The spelling of 38187145 in words is "thirty-eight million, one hundred eighty-seven thousand, one hundred forty-five".