1821348650 has 48 divisors (see below), whose sum is σ = 3730341600. Its totient is φ = 656097600.

The previous prime is 1821348629. The next prime is 1821348707. The reversal of 1821348650 is 568431281.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43376 + ... + 74324.

It is an arithmetic number, because the mean of its divisors is an integer number (77715450).

Almost surely, 2^1821348650 is an apocalyptic number.

1821348650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1821348650 is an abundant number, since it is smaller than the sum of its proper divisors (1908992950).

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

1821348650 is a wasteful number, since it uses less digits than its factorization.

1821348650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31079 (or 31074 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1821348650 is about 42677.2615100829. The cubic root of 1821348650 is about 1221.2306514949.

The spelling of 1821348650 in words is "one billion, eight hundred twenty-one million, three hundred forty-eight thousand, six hundred fifty".