3786461989 has 4 divisors (see below), whose sum is σ = 3787542124. Its totient is φ = 3785381856.

The previous prime is 3786461977. The next prime is 3786461993. The reversal of 3786461989 is 9891646873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2040057889 + 1746404100 = 45167^2 + 41790^2 .

It is a cyclic number.

It is not a de Polignac number, because 3786461989 - 2⁹ = 3786461477 is a prime.

It is a super-2 number, since 2×3786461989² = 28674588788283672242, 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 (3786461929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534792 + ... + 541825.

It is an arithmetic number, because the mean of its divisors is an integer number (946885531).

Almost surely, 2^3786461989 is an apocalyptic number.

It is an amenable number.

3786461989 is a deficient number, since it is larger than the sum of its proper divisors (1080135).

3786461989 is a wasteful number, since it uses less digits than its factorization.

3786461989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080134.

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

The square root of 3786461989 is about 61534.2342846647. The cubic root of 3786461989 is about 1558.6353929251.

The spelling of 3786461989 in words is "three billion, seven hundred eighty-six million, four hundred sixty-one thousand, nine hundred eighty-nine".