1361872474 has 4 divisors (see below), whose sum is σ = 2042808714. Its totient is φ = 680936236.

The previous prime is 1361872469. The next prime is 1361872483. The reversal of 1361872474 is 4742781631.

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., 1291899249 + 69973225 = 35943^2 + 8365^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1361872474.

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 as a sum of consecutive naturals, namely, 340468117 + ... + 340468120.

Almost surely, 2^1361872474 is an apocalyptic number.

1361872474 is a deficient number, since it is larger than the sum of its proper divisors (680936240).

1361872474 is an equidigital number, since it uses as much as digits as its factorization.

1361872474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680936239.

The product of its digits is 225792, while the sum is 43.

The square root of 1361872474 is about 36903.5563868850. The cubic root of 1361872474 is about 1108.4398919966.

The spelling of 1361872474 in words is "one billion, three hundred sixty-one million, eight hundred seventy-two thousand, four hundred seventy-four".