2263791987 has 12 divisors (see below), whose sum is σ = 3283606560. Its totient is φ = 1502878608.

The previous prime is 2263791983. The next prime is 2263792009. The reversal of 2263791987 is 7891973622.

It is not a de Polignac number, because 2263791987 - 2² = 2263791983 is a prime.

It is a super-3 number, since 3×2263791987³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2263791983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 524068 + ... + 528369.

It is an arithmetic number, because the mean of its divisors is an integer number (273633880).

Almost surely, 2^2263791987 is an apocalyptic number.

2263791987 is a deficient number, since it is larger than the sum of its proper divisors (1019814573).

2263791987 is a wasteful number, since it uses less digits than its factorization.

2263791987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052682 (or 1052679 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 2263791987 is about 47579.3231036340. The cubic root of 2263791987 is about 1313.0426695276.

The spelling of 2263791987 in words is "two billion, two hundred sixty-three million, seven hundred ninety-one thousand, nine hundred eighty-seven".