2147912478 has 28 divisors (see below), whose sum is σ = 4830596568. Its totient is φ = 715970340.

The previous prime is 2147912453. The next prime is 2147912483. The reversal of 2147912478 is 8742197412.

It is a super-2 number, since 2×2147912478² = 9227056026296200968, 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 (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 735138 + ... + 738053.

It is an arithmetic number, because the mean of its divisors is an integer number (172521306).

Almost surely, 2^2147912478 is an apocalyptic number.

2147912478 is an abundant number, since it is smaller than the sum of its proper divisors (2682684090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2147912478 is an equidigital number, since it uses as much as digits as its factorization.

2147912478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473211 (or 1473196 counting only the distinct ones).

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

The square root of 2147912478 is about 46345.5766821387. The cubic root of 2147912478 is about 1290.2450264684.

The spelling of 2147912478 in words is "two billion, one hundred forty-seven million, nine hundred twelve thousand, four hundred seventy-eight".