2140545544 has 16 divisors (see below), whose sum is σ = 4024288620. Its totient is φ = 1067401920.

The previous prime is 2140545541. The next prime is 2140545551. The reversal of 2140545544 is 4455450412.

It can be written as a sum of positive squares in 2 ways, for example, as 2091964644 + 48580900 = 45738^2 + 6970^2 .

It is not an unprimeable number, because it can be changed into a prime (2140545541) 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, 355687 + ... + 361654.

Almost surely, 2^2140545544 is an apocalyptic number.

It is an amenable number.

2140545544 is a deficient number, since it is larger than the sum of its proper divisors (1883743076).

2140545544 is a wasteful number, since it uses less digits than its factorization.

2140545544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717720 (or 717716 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

The square root of 2140545544 is about 46266.0301301073. The cubic root of 2140545544 is about 1288.7682379181.

Adding to 2140545544 its reverse (4455450412), we get a palindrome (6595995956).

The spelling of 2140545544 in words is "two billion, one hundred forty million, five hundred forty-five thousand, five hundred forty-four".