37981669 has 8 divisors (see below), whose sum is σ = 41514912. Its totient is φ = 34461840.

The previous prime is 37981661. The next prime is 37981693. The reversal of 37981669 is 96618973.

37981669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 37981669 - 2³ = 37981661 is a prime.

It is a super-2 number, since 2×37981669² = 2885214360051122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37981661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3127 + ... + 9259.

It is an arithmetic number, because the mean of its divisors is an integer number (5189364).

Almost surely, 2^37981669 is an apocalyptic number.

It is an amenable number.

37981669 is a deficient number, since it is larger than the sum of its proper divisors (3533243).

37981669 is a wasteful number, since it uses less digits than its factorization.

37981669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707.

The product of its digits is 489888, while the sum is 49.

The square root of 37981669 is about 6162.9269831793. The cubic root of 37981669 is about 336.1434720101.

The spelling of 37981669 in words is "thirty-seven million, nine hundred eighty-one thousand, six hundred sixty-nine".