1851009342 has 96 divisors (see below), whose sum is σ = 4640762880. Its totient is φ = 481852800.

The previous prime is 1851009337. The next prime is 1851009353. The reversal of 1851009342 is 2439001581.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 559092 + ... + 562392.

It is an arithmetic number, because the mean of its divisors is an integer number (48341280).

Almost surely, 2^1851009342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1851009342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2320381440).

1851009342 is an abundant number, since it is smaller than the sum of its proper divisors (2789753538).

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

1851009342 is a wasteful number, since it uses less digits than its factorization.

1851009342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418 (or 3405 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1851009342 is about 43023.3580976660. The cubic root of 1851009342 is about 1227.8242413276.

The spelling of 1851009342 in words is "one billion, eight hundred fifty-one million, nine thousand, three hundred forty-two".