2678734731 has 4 divisors (see below), whose sum is σ = 3571646312. Its totient is φ = 1785823152.

The previous prime is 2678734717. The next prime is 2678734733. The reversal of 2678734731 is 1374378762.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2678734731 - 2¹⁴ = 2678718347 is a prime.

It is a super-2 number, since 2×2678734731² = 14351239518131284722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2678734733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446455786 + ... + 446455791.

It is an arithmetic number, because the mean of its divisors is an integer number (892911578).

Almost surely, 2^2678734731 is an apocalyptic number.

2678734731 is a deficient number, since it is larger than the sum of its proper divisors (892911581).

2678734731 is an equidigital number, since it uses as much as digits as its factorization.

2678734731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892911580.

The product of its digits is 1185408, while the sum is 48.

The square root of 2678734731 is about 51756.4945779754. The cubic root of 2678734731 is about 1388.8112831065.

The spelling of 2678734731 in words is "two billion, six hundred seventy-eight million, seven hundred thirty-four thousand, seven hundred thirty-one".