1838385654 has 16 divisors (see below), whose sum is σ = 4202024448. Its totient is φ = 525253032.

The previous prime is 1838385649. The next prime is 1838385671. The reversal of 1838385654 is 4565838381.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1838385597 and 1838385606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21885502 + ... + 21885585.

It is an arithmetic number, because the mean of its divisors is an integer number (262626528).

Almost surely, 2^1838385654 is an apocalyptic number.

1838385654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1838385654 is an abundant number, since it is smaller than the sum of its proper divisors (2363638794).

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

1838385654 is a wasteful number, since it uses less digits than its factorization.

1838385654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43771099.

The product of its digits is 2764800, while the sum is 51.

The square root of 1838385654 is about 42876.3997322536. The cubic root of 1838385654 is about 1225.0266614217.

The spelling of 1838385654 in words is "one billion, eight hundred thirty-eight million, three hundred eighty-five thousand, six hundred fifty-four".