37987481 has 8 divisors (see below), whose sum is σ = 43813440. Its totient is φ = 32261328.

The previous prime is 37987471. The next prime is 37987483. The reversal of 37987481 is 18478973.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37987481 is a prime.

It is a super-2 number, since 2×37987481² = 2886097425450722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37987483) 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 7 ways as a sum of consecutive naturals, for example, 24131 + ... + 25656.

It is an arithmetic number, because the mean of its divisors is an integer number (5476680).

Almost surely, 2^37987481 is an apocalyptic number.

It is an amenable number.

37987481 is a deficient number, since it is larger than the sum of its proper divisors (5825959).

37987481 is a wasteful number, since it uses less digits than its factorization.

37987481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49903.

The product of its digits is 338688, while the sum is 47.

The square root of 37987481 is about 6163.3984943374. The cubic root of 37987481 is about 336.1606168264.

The spelling of 37987481 in words is "thirty-seven million, nine hundred eighty-seven thousand, four hundred eighty-one".