3786981 has 8 divisors (see below), whose sum is σ = 5508384. Its totient is φ = 2295120.

The previous prime is 3786953. The next prime is 3786989. The reversal of 3786981 is 1896873.

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

It is not a de Polignac number, because 3786981 - 2²¹ = 1689829 is a prime.

It is a super-2 number, since 2×3786981² = 28682450188722, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3786989) 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, 57346 + ... + 57411.

It is an arithmetic number, because the mean of its divisors is an integer number (688548).

Almost surely, 2^3786981 is an apocalyptic number.

It is an amenable number.

3786981 is a deficient number, since it is larger than the sum of its proper divisors (1721403).

3786981 is a wasteful number, since it uses less digits than its factorization.

3786981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114771.

The product of its digits is 72576, while the sum is 42.

The square root of 3786981 is about 1946.0167008533. The cubic root of 3786981 is about 155.8706603813.

It can be divided in two parts, 37869 and 81, that added together give a triangular number (37950 = T₂₇₅).

The spelling of 3786981 in words is "three million, seven hundred eighty-six thousand, nine hundred eighty-one".