1849022640 has 100 divisors (see below), whose sum is σ = 6421952064. Its totient is φ = 493070976.

The previous prime is 1849022587. The next prime is 1849022641. The reversal of 1849022640 is 462209481.

1849022640 is a `hidden beast` number, since 1 + 8 + 4 + 9 + 0 + 2 + 2 + 640 = 666.

1849022640 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1849022595 and 1849022604.

It is not an unprimeable number, because it can be changed into a prime (1849022641) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136192 + ... + 149151.

Almost surely, 2^1849022640 is an apocalyptic number.

1849022640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1849022640 is an abundant number, since it is smaller than the sum of its proper divisors (4572929424).

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

1849022640 is a wasteful number, since it uses less digits than its factorization.

1849022640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285368 (or 285353 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1849022640 is about 43000.2632550081. The cubic root of 1849022640 is about 1227.3848064645.

The spelling of 1849022640 in words is "one billion, eight hundred forty-nine million, twenty-two thousand, six hundred forty".