3778940605 has 16 divisors (see below), whose sum is σ = 4950486144. Its totient is φ = 2746370880.

The previous prime is 3778940587. The next prime is 3778940611. The reversal of 3778940605 is 5060498773.

It is a happy number.

It is not a de Polignac number, because 3778940605 - 2¹⁵ = 3778907837 is a prime.

It is a super-2 number, since 2×3778940605² = 28560784192235532050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56272 + ... + 103558.

It is an arithmetic number, because the mean of its divisors is an integer number (309405384).

Almost surely, 2^3778940605 is an apocalyptic number.

It is an amenable number.

3778940605 is a deficient number, since it is larger than the sum of its proper divisors (1171545539).

3778940605 is a wasteful number, since it uses less digits than its factorization.

3778940605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48756.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 3778940605 is about 61473.0884615374. The cubic root of 3778940605 is about 1557.6026904424.

The spelling of 3778940605 in words is "three billion, seven hundred seventy-eight million, nine hundred forty thousand, six hundred five".