1372873287 has 4 divisors (see below), whose sum is σ = 1830497720. Its totient is φ = 915248856.

The previous prime is 1372873283. The next prime is 1372873357. The reversal of 1372873287 is 7823782731.

It is a happy number.

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

It is not a de Polignac number, because 1372873287 - 2² = 1372873283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372873283) 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, 228812212 + ... + 228812217.

It is an arithmetic number, because the mean of its divisors is an integer number (457624430).

Almost surely, 2^1372873287 is an apocalyptic number.

1372873287 is a deficient number, since it is larger than the sum of its proper divisors (457624433).

1372873287 is an equidigital number, since it uses as much as digits as its factorization.

1372873287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457624432.

The product of its digits is 790272, while the sum is 48.

The square root of 1372873287 is about 37052.3047461288. The cubic root of 1372873287 is about 1111.4164443175.

The spelling of 1372873287 in words is "one billion, three hundred seventy-two million, eight hundred seventy-three thousand, two hundred eighty-seven".