1878672231 has 8 divisors (see below), whose sum is σ = 2783218160. Its totient is φ = 1252448136.

The previous prime is 1878672181. The next prime is 1878672233. The reversal of 1878672231 is 1322768781.

It is a de Polignac number, because none of the positive numbers 2^k-1878672231 is a prime.

It is a super-2 number, since 2×1878672231² = 7058818703061034722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878672233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34790200 + ... + 34790253.

It is an arithmetic number, because the mean of its divisors is an integer number (347902270).

Almost surely, 2^1878672231 is an apocalyptic number.

1878672231 is a deficient number, since it is larger than the sum of its proper divisors (904545929).

1878672231 is an equidigital number, since it uses as much as digits as its factorization.

1878672231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69580462 (or 69580456 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 1878672231 is about 43343.6527187084. The cubic root of 1878672231 is about 1233.9105344454.

The spelling of 1878672231 in words is "one billion, eight hundred seventy-eight million, six hundred seventy-two thousand, two hundred thirty-one".