3781955654 has 4 divisors (see below), whose sum is σ = 5672933484. Its totient is φ = 1890977826.

The previous prime is 3781955623. The next prime is 3781955657. The reversal of 3781955654 is 4565591873.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4565591873 = 83 ⋅55007131.

It is a junction number, because it is equal to n+sod(n) for n = 3781955596 and 3781955605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781955657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945488912 + ... + 945488915.

It is an arithmetic number, because the mean of its divisors is an integer number (1418233371).

Almost surely, 2^3781955654 is an apocalyptic number.

3781955654 is a deficient number, since it is larger than the sum of its proper divisors (1890977830).

3781955654 is a wasteful number, since it uses less digits than its factorization.

3781955654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890977829.

The product of its digits is 4536000, while the sum is 53.

The square root of 3781955654 is about 61497.6068965289. The cubic root of 3781955654 is about 1558.0168276749.

The spelling of 3781955654 in words is "three billion, seven hundred eighty-one million, nine hundred fifty-five thousand, six hundred fifty-four".