37945389 has 8 divisors (see below), whose sum is σ = 50656320. Its totient is φ = 25265696.

The previous prime is 37945381. The next prime is 37945447. The reversal of 37945389 is 98354973.

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 37945389 - 2³ = 37945381 is a prime.

It is a super-2 number, since 2×37945389² = 2879705092722642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37945381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4809 + ... + 9950.

It is an arithmetic number, because the mean of its divisors is an integer number (6332040).

Almost surely, 2^37945389 is an apocalyptic number.

It is an amenable number.

37945389 is a deficient number, since it is larger than the sum of its proper divisors (12710931).

37945389 is a wasteful number, since it uses less digits than its factorization.

37945389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15619.

The product of its digits is 816480, while the sum is 48.

The square root of 37945389 is about 6159.9828733528. The cubic root of 37945389 is about 336.0364100991.

The spelling of 37945389 in words is "thirty-seven million, nine hundred forty-five thousand, three hundred eighty-nine".