1853949642 has 32 divisors (see below), whose sum is σ = 3869743680. Its totient is φ = 591386880.

The previous prime is 1853949641. The next prime is 1853949649. The reversal of 1853949642 is 2469493581.

It is not an unprimeable number, because it can be changed into a prime (1853949641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27484 + ... + 66807.

It is an arithmetic number, because the mean of its divisors is an integer number (120929490).

Almost surely, 2^1853949642 is an apocalyptic number.

1853949642 is an abundant number, since it is smaller than the sum of its proper divisors (2015794038).

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

1853949642 is a wasteful number, since it uses less digits than its factorization.

1853949642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94438.

The product of its digits is 1866240, while the sum is 51.

The square root of 1853949642 is about 43057.5155112322. The cubic root of 1853949642 is about 1228.4740240619.

The spelling of 1853949642 in words is "one billion, eight hundred fifty-three million, nine hundred forty-nine thousand, six hundred forty-two".