6149739915 has 80 divisors (see below), whose sum is σ = 12047650560. Its totient is φ = 2976367680.

The previous prime is 6149739877. The next prime is 6149739941. The reversal of 6149739915 is 5199379416.

6149739915 is a `hidden beast` number, since 61 + 497 + 3 + 9 + 91 + 5 = 666.

It is not a de Polignac number, because 6149739915 - 2⁹ = 6149739403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3826042 + ... + 3827648.

It is an arithmetic number, because the mean of its divisors is an integer number (150595632).

Almost surely, 2^6149739915 is an apocalyptic number.

6149739915 is a deficient number, since it is larger than the sum of its proper divisors (5897910645).

6149739915 is a wasteful number, since it uses less digits than its factorization.

6149739915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2485 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 6149739915 is about 78420.2774478642. The cubic root of 6149739915 is about 1832.1129718850.

The spelling of 6149739915 in words is "six billion, one hundred forty-nine million, seven hundred thirty-nine thousand, nine hundred fifteen".