2143774480 has 40 divisors (see below), whose sum is σ = 5013118872. Its totient is φ = 852547584.

The previous prime is 2143774439. The next prime is 2143774483. The reversal of 2143774480 is 844773412.

It can be written as a sum of positive squares in 4 ways, for example, as 285474816 + 1858299664 = 16896^2 + 43108^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (2143774483) 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, 63609 + ... + 91288.

Almost surely, 2^2143774480 is an apocalyptic number.

2143774480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143774480 is an abundant number, since it is smaller than the sum of its proper divisors (2869344392).

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

2143774480 is a wasteful number, since it uses less digits than its factorization.

2143774480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155083 (or 155077 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 2143774480 is about 46300.9123020271. The cubic root of 2143774480 is about 1289.4159325376.

The spelling of 2143774480 in words is "two billion, one hundred forty-three million, seven hundred seventy-four thousand, four hundred eighty".