2158537141 has 4 divisors (see below), whose sum is σ = 2285509932. Its totient is φ = 2031564352.

The previous prime is 2158537133. The next prime is 2158537159. The reversal of 2158537141 is 1417358512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1743396516 + 415140625 = 41754^2 + 20375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158537141 - 2³ = 2158537133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2158537141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158537111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63486370 + ... + 63486403.

It is an arithmetic number, because the mean of its divisors is an integer number (571377483).

Almost surely, 2^2158537141 is an apocalyptic number.

It is an amenable number.

2158537141 is a deficient number, since it is larger than the sum of its proper divisors (126972791).

2158537141 is a wasteful number, since it uses less digits than its factorization.

2158537141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126972790.

The product of its digits is 33600, while the sum is 37.

The square root of 2158537141 is about 46460.0596319032. The cubic root of 2158537141 is about 1292.3689301372.

The spelling of 2158537141 in words is "two billion, one hundred fifty-eight million, five hundred thirty-seven thousand, one hundred forty-one".