1821301968 has 40 divisors (see below), whose sum is σ = 4721690848. Its totient is φ = 604950912.

The previous prime is 1821301967. The next prime is 1821301991. The reversal of 1821301968 is 8691031281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821301967) 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, 53455 + ... + 80622.

Almost surely, 2^1821301968 is an apocalyptic number.

It is an amenable number.

1821301968 is an abundant number, since it is smaller than the sum of its proper divisors (2900388880).

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

1821301968 is a wasteful number, since it uses less digits than its factorization.

1821301968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134371 (or 134365 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1821301968 is about 42676.7145876999. The cubic root of 1821301968 is about 1221.2202178388.

The spelling of 1821301968 in words is "one billion, eight hundred twenty-one million, three hundred one thousand, nine hundred sixty-eight".