5149560981 has 4 divisors (see below), whose sum is σ = 6866081312. Its totient is φ = 3433040652.

The previous prime is 5149560893. The next prime is 5149560989. The reversal of 5149560981 is 1890659415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5149560981 - 2⁹ = 5149560469 is a prime.

It is a super-2 number, since 2×5149560981² = 53035956594075364722, which contains 22 as substring.

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 5149560981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5149560989) 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, 858260161 + ... + 858260166.

It is an arithmetic number, because the mean of its divisors is an integer number (1716520328).

Almost surely, 2^5149560981 is an apocalyptic number.

It is an amenable number.

5149560981 is a deficient number, since it is larger than the sum of its proper divisors (1716520331).

5149560981 is a wasteful number, since it uses less digits than its factorization.

5149560981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716520330.

The product of its (nonzero) digits is 388800, while the sum is 48.

The square root of 5149560981 is about 71760.4416165341. The cubic root of 5149560981 is about 1726.8584304534.

The spelling of 5149560981 in words is "five billion, one hundred forty-nine million, five hundred sixty thousand, nine hundred eighty-one".