3781489634 has 8 divisors (see below), whose sum is σ = 6108560220. Its totient is φ = 1745302896.

The previous prime is 3781489627. The next prime is 3781489637. The reversal of 3781489634 is 4369841873.

It can be written as a sum of positive squares in 2 ways, for example, as 3209562409 + 571927225 = 56653^2 + 23915^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3781489637) 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, 72720929 + ... + 72720980.

Almost surely, 2^3781489634 is an apocalyptic number.

3781489634 is a deficient number, since it is larger than the sum of its proper divisors (2327070586).

3781489634 is a wasteful number, since it uses less digits than its factorization.

3781489634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145441924.

The product of its digits is 3483648, while the sum is 53.

The square root of 3781489634 is about 61493.8178518784. The cubic root of 3781489634 is about 1557.9528310822.

The spelling of 3781489634 in words is "three billion, seven hundred eighty-one million, four hundred eighty-nine thousand, six hundred thirty-four".