1051659549 has 12 divisors (see below), whose sum is σ = 1547726076. Its totient is φ = 687877632.

The previous prime is 1051659533. The next prime is 1051659617. The reversal of 1051659549 is 9459561501.

It is a happy number.

1051659549 is a `hidden beast` number, since 1 + 0 + 5 + 16 + 595 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 311275449 + 740384100 = 17643^2 + 27210^2 .

It is not a de Polignac number, because 1051659549 - 2⁴ = 1051659533 is a prime.

It is a super-2 number, since 2×1051659549² = 2211975614005766802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051659529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1101892 + ... + 1102845.

It is an arithmetic number, because the mean of its divisors is an integer number (128977173).

Almost surely, 2^1051659549 is an apocalyptic number.

It is an amenable number.

1051659549 is a deficient number, since it is larger than the sum of its proper divisors (496066527).

1051659549 is a wasteful number, since it uses less digits than its factorization.

1051659549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204796 (or 2204793 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The square root of 1051659549 is about 32429.3007787710. The cubic root of 1051659549 is about 1016.9315541745.

The spelling of 1051659549 in words is "one billion, fifty-one million, six hundred fifty-nine thousand, five hundred forty-nine".