2643197474 has 4 divisors (see below), whose sum is σ = 3964796214. Its totient is φ = 1321598736.

The previous prime is 2643197449. The next prime is 2643197509. The reversal of 2643197474 is 4747913462.

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

It can be written as a sum of positive squares in only one way, i.e., 2366141449 + 277056025 = 48643^2 + 16645^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660799367 + ... + 660799370.

Almost surely, 2^2643197474 is an apocalyptic number.

2643197474 is a deficient number, since it is larger than the sum of its proper divisors (1321598740).

2643197474 is a wasteful number, since it uses less digits than its factorization.

2643197474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321598739.

The product of its digits is 1016064, while the sum is 47.

The square root of 2643197474 is about 51412.0362755649. The cubic root of 2643197474 is about 1382.6423981239.

The spelling of 2643197474 in words is "two billion, six hundred forty-three million, one hundred ninety-seven thousand, four hundred seventy-four".