2638050687 has 20 divisors (see below), whose sum is σ = 4148204280. Its totient is φ = 1666136304.

The previous prime is 2638050661. The next prime is 2638050689. The reversal of 2638050687 is 7860508362.

2638050687 is a `hidden beast` number, since 2 + 63 + 8 + 0 + 506 + 87 = 666.

It is not a de Polignac number, because 2638050687 - 2¹⁹ = 2637526399 is a prime.

It is a super-2 number, since 2×2638050687² = 13918622854362343938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638050689) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 855528 + ... + 858605.

It is an arithmetic number, because the mean of its divisors is an integer number (207410214).

Almost surely, 2^2638050687 is an apocalyptic number.

2638050687 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2638050687 is a deficient number, since it is larger than the sum of its proper divisors (1510153593).

2638050687 is a wasteful number, since it uses less digits than its factorization.

2638050687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714164 (or 1714155 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 2638050687 is about 51361.9575853569. The cubic root of 2638050687 is about 1381.7443961373.

The spelling of 2638050687 in words is "two billion, six hundred thirty-eight million, fifty thousand, six hundred eighty-seven".