2731692690 has 24 divisors (see below), whose sum is σ = 7102401228. Its totient is φ = 728451360.

The previous prime is 2731692679. The next prime is 2731692749. The reversal of 2731692690 is 962961372.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2340721161 + 390971529 = 48381^2 + 19773^2 .

It is a super-2 number, since 2×2731692690² = 14924289905198872200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15175981 + ... + 15176160.

Almost surely, 2^2731692690 is an apocalyptic number.

2731692690 is an abundant number, since it is smaller than the sum of its proper divisors (4370708538).

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

2731692690 is a wasteful number, since it uses less digits than its factorization.

2731692690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30352154 (or 30352151 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 2731692690 is about 52265.5975762260. The cubic root of 2731692690 is about 1397.9037829732.

The spelling of 2731692690 in words is "two billion, seven hundred thirty-one million, six hundred ninety-two thousand, six hundred ninety".