3781443654 has 48 divisors (see below), whose sum is σ = 8793965232. Its totient is φ = 1170077184.

The previous prime is 3781443641. The next prime is 3781443751. The reversal of 3781443654 is 4563441873.

It is a super-2 number, since 2×3781443654² = 28598632216753743432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62304 + ... + 106979.

It is an arithmetic number, because the mean of its divisors is an integer number (183207609).

Almost surely, 2^3781443654 is an apocalyptic number.

3781443654 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3781443654 is an abundant number, since it is smaller than the sum of its proper divisors (5012521578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3781443654 is a wasteful number, since it uses less digits than its factorization.

3781443654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169381 (or 169378 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 3781443654 is about 61493.4439920224. The cubic root of 3781443654 is about 1557.9465165546.

The spelling of 3781443654 in words is "three billion, seven hundred eighty-one million, four hundred forty-three thousand, six hundred fifty-four".