37890068893 has 4 divisors (see below), whose sum is σ = 37891377340. Its totient is φ = 37888760448.

The previous prime is 37890068891. The next prime is 37890068903. The reversal of 37890068893 is 39886009873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39886009873 = 601 ⋅66366073.

It can be written as a sum of positive squares in 2 ways, for example, as 15020463364 + 22869605529 = 122558^2 + 151227^2 .

It is a cyclic number.

It is not a de Polignac number, because 37890068893 - 2¹ = 37890068891 is a prime.

It is a super-4 number, since 4×37890068893⁴ (a number of 43 digits) contains 4444 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 (37890068891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609780 + ... + 669037.

It is an arithmetic number, because the mean of its divisors is an integer number (9472844335).

Almost surely, 2^37890068893 is an apocalyptic number.

It is an amenable number.

37890068893 is a deficient number, since it is larger than the sum of its proper divisors (1308447).

37890068893 is a wasteful number, since it uses less digits than its factorization.

37890068893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308446.

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 37890068893 in words is "thirty-seven billion, eight hundred ninety million, sixty-eight thousand, eight hundred ninety-three".