1851416946 has 16 divisors (see below), whose sum is σ = 4114260000. Its totient is φ = 617138964.

The previous prime is 1851416929. The next prime is 1851416969. The reversal of 1851416946 is 6496141581.

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, 17142696 + ... + 17142803.

It is an arithmetic number, because the mean of its divisors is an integer number (257141250).

Almost surely, 2^1851416946 is an apocalyptic number.

1851416946 is an abundant number, since it is smaller than the sum of its proper divisors (2262843054).

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

1851416946 is a wasteful number, since it uses less digits than its factorization.

1851416946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34285510 (or 34285504 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1851416946 is about 43028.0948451125. The cubic root of 1851416946 is about 1227.9143596088.

The spelling of 1851416946 in words is "one billion, eight hundred fifty-one million, four hundred sixteen thousand, nine hundred forty-six".