2147916478 has 16 divisors (see below), whose sum is σ = 3359012976. Its totient is φ = 1029188160.

The previous prime is 2147916457. The next prime is 2147916509. The reversal of 2147916478 is 8746197412.

It is a super-2 number, since 2×2147916478² = 9227090392927848968, which contains 22 as substring.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 231063 + ... + 240178.

It is an arithmetic number, because the mean of its divisors is an integer number (209938311).

Almost surely, 2^2147916478 is an apocalyptic number.

2147916478 is a deficient number, since it is larger than the sum of its proper divisors (1211096498).

2147916478 is a wasteful number, since it uses less digits than its factorization.

2147916478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471339.

The product of its digits is 677376, while the sum is 49.

The square root of 2147916478 is about 46345.6198361830. The cubic root of 2147916478 is about 1290.2458273975.

The spelling of 2147916478 in words is "two billion, one hundred forty-seven million, nine hundred sixteen thousand, four hundred seventy-eight".