6158749544 has 16 divisors (see below), whose sum is σ = 11584088100. Its totient is φ = 3069659392.

The previous prime is 6158749543. The next prime is 6158749559. The reversal of 6158749544 is 4459478516.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5220062500 + 938687044 = 72250^2 + 30638^2 .

It is not an unprimeable number, because it can be changed into a prime (6158749543) 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, 1211729 + ... + 1216800.

Almost surely, 2^6158749544 is an apocalyptic number.

It is an amenable number.

6158749544 is a deficient number, since it is larger than the sum of its proper divisors (5425338556).

6158749544 is a wasteful number, since it uses less digits than its factorization.

6158749544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428852 (or 2428848 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 53.

The square root of 6158749544 is about 78477.7009347241. The cubic root of 6158749544 is about 1833.0072429686.

The spelling of 6158749544 in words is "six billion, one hundred fifty-eight million, seven hundred forty-nine thousand, five hundred forty-four".