2140451540 has 24 divisors (see below), whose sum is σ = 4536961632. Its totient is φ = 848178080.

The previous prime is 2140451527. The next prime is 2140451557. The reversal of 2140451540 is 451540412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497966 + ... + 502245.

It is an arithmetic number, because the mean of its divisors is an integer number (189040068).

Almost surely, 2^2140451540 is an apocalyptic number.

2140451540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140451540 is an abundant number, since it is smaller than the sum of its proper divisors (2396510092).

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

2140451540 is a wasteful number, since it uses less digits than its factorization.

2140451540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000327 (or 1000325 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2140451540 is about 46265.0142116049. The cubic root of 2140451540 is about 1288.7493718330.

Adding to 2140451540 its reverse (451540412), we get a palindrome (2591991952).

The spelling of 2140451540 in words is "two billion, one hundred forty million, four hundred fifty-one thousand, five hundred forty".