1838456141 has 4 divisors (see below), whose sum is σ = 1845240384. Its totient is φ = 1831671900.

The previous prime is 1838456119. The next prime is 1838456149. The reversal of 1838456141 is 1416548381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1416548381 = 1297 ⋅1092173.

It is a cyclic number.

It is not a de Polignac number, because 1838456141 - 2⁶ = 1838456077 is a prime.

It is a super-2 number, since 2×1838456141² = 6759841964761223762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838456149) 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, 3391715 + ... + 3392256.

It is an arithmetic number, because the mean of its divisors is an integer number (461310096).

Almost surely, 2^1838456141 is an apocalyptic number.

It is an amenable number.

1838456141 is a deficient number, since it is larger than the sum of its proper divisors (6784243).

1838456141 is an equidigital number, since it uses as much as digits as its factorization.

1838456141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784242.

The product of its digits is 92160, while the sum is 41.

The square root of 1838456141 is about 42877.2217033707. The cubic root of 1838456141 is about 1225.0423177940.

The spelling of 1838456141 in words is "one billion, eight hundred thirty-eight million, four hundred fifty-six thousand, one hundred forty-one".