2220763491 has 12 divisors (see below), whose sum is σ = 3376599720. Its totient is φ = 1402587360.

The previous prime is 2220763487. The next prime is 2220763553. The reversal of 2220763491 is 1943670222.

It is not a de Polignac number, because 2220763491 - 2² = 2220763487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2220763411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6493290 + ... + 6493631.

It is an arithmetic number, because the mean of its divisors is an integer number (281383310).

Almost surely, 2^2220763491 is an apocalyptic number.

2220763491 is a deficient number, since it is larger than the sum of its proper divisors (1155836229).

2220763491 is a wasteful number, since it uses less digits than its factorization.

2220763491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12986946 (or 12986943 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 2220763491 is about 47124.9773580847. The cubic root of 2220763491 is about 1304.6702809056.

The spelling of 2220763491 in words is "two billion, two hundred twenty million, seven hundred sixty-three thousand, four hundred ninety-one".