2681869518 has 12 divisors (see below), whose sum is σ = 5810717328. Its totient is φ = 893956500.

The previous prime is 2681869471. The next prime is 2681869543. The reversal of 2681869518 is 8159681862.

It is a happy number.

2681869518 is a `hidden beast` number, since 2 + 68 + 1 + 8 + 69 + 518 = 666.

It is a super-2 number, since 2×2681869518² = 14384848223155104648, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74496358 + ... + 74496393.

It is an arithmetic number, because the mean of its divisors is an integer number (484226444).

Almost surely, 2^2681869518 is an apocalyptic number.

2681869518 is an abundant number, since it is smaller than the sum of its proper divisors (3128847810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2681869518 is a wasteful number, since it uses less digits than its factorization.

2681869518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148992759 (or 148992756 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 2681869518 is about 51786.7697196881. The cubic root of 2681869518 is about 1389.3528236495.

The spelling of 2681869518 in words is "two billion, six hundred eighty-one million, eight hundred sixty-nine thousand, five hundred eighteen".