1850949858 has 16 divisors (see below), whose sum is σ = 3722582880. Its totient is φ = 613536096.

The previous prime is 1850949857. The next prime is 1850949869. The reversal of 1850949858 is 8589490581.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1850949798 and 1850949807.

It is not an unprimeable number, because it can be changed into a prime (1850949857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860635 + ... + 862782.

It is an arithmetic number, because the mean of its divisors is an integer number (232661430).

Almost surely, 2^1850949858 is an apocalyptic number.

1850949858 is an abundant number, since it is smaller than the sum of its proper divisors (1871633022).

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

1850949858 is a wasteful number, since it uses less digits than its factorization.

1850949858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723601.

The product of its (nonzero) digits is 4147200, while the sum is 57.

The square root of 1850949858 is about 43022.6667932149. Note that the first 3 decimals coincide. The cubic root of 1850949858 is about 1227.8110887415.

The spelling of 1850949858 in words is "one billion, eight hundred fifty million, nine hundred forty-nine thousand, eight hundred fifty-eight".