2139051543 has 16 divisors (see below), whose sum is σ = 3009519360. Its totient is φ = 1348702784.

The previous prime is 2139051527. The next prime is 2139051569. The reversal of 2139051543 is 3451509312.

It is a cyclic number.

It is not a de Polignac number, because 2139051543 - 2⁴ = 2139051527 is a prime.

It is a super-2 number, since 2×2139051543² = 9151083007221361698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139051583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168021 + ... + 180302.

It is an arithmetic number, because the mean of its divisors is an integer number (188094960).

Almost surely, 2^2139051543 is an apocalyptic number.

2139051543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2139051543 is a deficient number, since it is larger than the sum of its proper divisors (870467817).

2139051543 is a wasteful number, since it uses less digits than its factorization.

2139051543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348438.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 2139051543 is about 46249.8815457943. The cubic root of 2139051543 is about 1288.4683347514.

The spelling of 2139051543 in words is "two billion, one hundred thirty-nine million, fifty-one thousand, five hundred forty-three".