1839219642 has 64 divisors (see below), whose sum is σ = 4463665920. Its totient is φ = 557928000.

The previous prime is 1839219637. The next prime is 1839219649. The reversal of 1839219642 is 2469129381.

It is not an unprimeable number, because it can be changed into a prime (1839219649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31392 + ... + 68292.

It is an arithmetic number, because the mean of its divisors is an integer number (69744780).

Almost surely, 2^1839219642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1839219642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2231832960).

1839219642 is an abundant number, since it is smaller than the sum of its proper divisors (2624446278).

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

1839219642 is a wasteful number, since it uses less digits than its factorization.

1839219642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36996 (or 36990 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 1839219642 is about 42886.1241195798. The cubic root of 1839219642 is about 1225.2118788305.

The spelling of 1839219642 in words is "one billion, eight hundred thirty-nine million, two hundred nineteen thousand, six hundred forty-two".