2788393487 has 16 divisors (see below), whose sum is σ = 3206836224. Its totient is φ = 2400924000.

The previous prime is 2788393481. The next prime is 2788393493. The reversal of 2788393487 is 7843938872.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2788393481) and next prime (2788393493).

It is a cyclic number.

It is not a de Polignac number, because 2788393487 - 2⁶ = 2788393423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788393481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70964 + ... + 103017.

It is an arithmetic number, because the mean of its divisors is an integer number (200427264).

Almost surely, 2^2788393487 is an apocalyptic number.

2788393487 is a deficient number, since it is larger than the sum of its proper divisors (418442737).

2788393487 is a wasteful number, since it uses less digits than its factorization.

2788393487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174070.

The product of its digits is 16257024, while the sum is 59.

The square root of 2788393487 is about 52805.2410940429. The cubic root of 2788393487 is about 1407.5095596712.

The spelling of 2788393487 in words is "two billion, seven hundred eighty-eight million, three hundred ninety-three thousand, four hundred eighty-seven".