2687943091 has 8 divisors (see below), whose sum is σ = 2854455120. Its totient is φ = 2523935232.

The previous prime is 2687943079. The next prime is 2687943103. The reversal of 2687943091 is 1903497862.

It is an interprime number because it is at equal distance from previous prime (2687943079) and next prime (2687943103).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2687943091 - 2⁷ = 2687942963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2687973091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623830 + ... + 628123.

It is an arithmetic number, because the mean of its divisors is an integer number (356806890).

Almost surely, 2^2687943091 is an apocalyptic number.

2687943091 is a deficient number, since it is larger than the sum of its proper divisors (166512029).

2687943091 is a wasteful number, since it uses less digits than its factorization.

2687943091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252085.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 2687943091 is about 51845.3767562740. The cubic root of 2687943091 is about 1390.4008455242.

The spelling of 2687943091 in words is "two billion, six hundred eighty-seven million, nine hundred forty-three thousand, ninety-one".