1821752736 has 48 divisors (see below), whose sum is σ = 4797755424. Its totient is φ = 605263104.

The previous prime is 1821752717. The next prime is 1821752753. The reversal of 1821752736 is 6372571281.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1821752736² = 6637566062246971392, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435 + ... + 60378.

It is an arithmetic number, because the mean of its divisors is an integer number (99953238).

Almost surely, 2^1821752736 is an apocalyptic number.

1821752736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1821752736 is an abundant number, since it is smaller than the sum of its proper divisors (2976002688).

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

1821752736 is a wasteful number, since it uses less digits than its factorization.

1821752736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62133 (or 62125 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 1821752736 is about 42681.9954547582. The cubic root of 1821752736 is about 1221.3209592491.

The spelling of 1821752736 in words is "one billion, eight hundred twenty-one million, seven hundred fifty-two thousand, seven hundred thirty-six".