38905537 has 16 divisors (see below), whose sum is σ = 46161792. Its totient is φ = 32382720.

The previous prime is 38905513. The next prime is 38905543. The reversal of 38905537 is 73550983.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38905537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38905537.

It is not an unprimeable number, because it can be changed into a prime (38905507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4108 + ... + 9730.

It is an arithmetic number, because the mean of its divisors is an integer number (2885112).

Almost surely, 2^38905537 is an apocalyptic number.

38905537 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

38905537 is a deficient number, since it is larger than the sum of its proper divisors (7256255).

38905537 is a wasteful number, since it uses less digits than its factorization.

38905537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 38905537 is about 6237.4303202521. The cubic root of 38905537 is about 338.8471246491.

The spelling of 38905537 in words is "thirty-eight million, nine hundred five thousand, five hundred thirty-seven".