7928149137 has 32 divisors (see below), whose sum is σ = 11246601600. Its totient is φ = 4958327808.

The previous prime is 7928149051. The next prime is 7928149169. The reversal of 7928149137 is 7319418297.

It is not a de Polignac number, because 7928149137 - 2¹¹ = 7928147089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7928149137.

It is not an unprimeable number, because it can be changed into a prime (7928149337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3278953 + ... + 3281369.

It is an arithmetic number, because the mean of its divisors is an integer number (351456300).

Almost surely, 2^7928149137 is an apocalyptic number.

It is an amenable number.

7928149137 is a deficient number, since it is larger than the sum of its proper divisors (3318452463).

7928149137 is a wasteful number, since it uses less digits than its factorization.

7928149137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505.

The product of its digits is 762048, while the sum is 51.

The square root of 7928149137 is about 89040.1546326151. The cubic root of 7928149137 is about 1993.9944125936.

The spelling of 7928149137 in words is "seven billion, nine hundred twenty-eight million, one hundred forty-nine thousand, one hundred thirty-seven".