3737985381 has 32 divisors (see below), whose sum is σ = 6314555520. Its totient is φ = 2164983552.

The previous prime is 3737985371. The next prime is 3737985397. The reversal of 3737985381 is 1835897373.

3737985381 is a `hidden beast` number, since 37 + 3 + 79 + 8 + 538 + 1 = 666.

It is not a de Polignac number, because 3737985381 - 2¹³ = 3737977189 is a prime.

It is a super-2 number, since 2×3737985381² = 27945069417139430322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3737985371) 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 31 ways as a sum of consecutive naturals, for example, 307255 + ... + 319188.

It is an arithmetic number, because the mean of its divisors is an integer number (197329860).

Almost surely, 2^3737985381 is an apocalyptic number.

It is an amenable number.

3737985381 is a deficient number, since it is larger than the sum of its proper divisors (2576570139).

3737985381 is a wasteful number, since it uses less digits than its factorization.

3737985381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626482 (or 626476 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 3737985381 is about 61139.0659153376. The cubic root of 3737985381 is about 1551.9552682942.

It can be divided in two parts, 37379 and 85381, that added together give a triangular number (122760 = T₄₉₅).

The spelling of 3737985381 in words is "three billion, seven hundred thirty-seven million, nine hundred eighty-five thousand, three hundred eighty-one".