38661544 has 8 divisors (see below), whose sum is σ = 72490410. Its totient is φ = 19330768.

The previous prime is 38661541. The next prime is 38661547. The reversal of 38661544 is 44516683.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38661541) and next prime (38661547).

It can be written as a sum of positive squares in only one way, i.e., 35640900 + 3020644 = 5970^2 + 1738^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (38661541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2416339 + ... + 2416354.

Almost surely, 2^38661544 is an apocalyptic number.

It is an amenable number.

38661544 is a deficient number, since it is larger than the sum of its proper divisors (33828866).

38661544 is a wasteful number, since it uses less digits than its factorization.

38661544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832699 (or 4832695 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 38661544 is about 6217.8407827798. The cubic root of 38661544 is about 338.1372876931.

The spelling of 38661544 in words is "thirty-eight million, six hundred sixty-one thousand, five hundred forty-four".