130649779 has 16 divisors (see below), whose sum is σ = 147261184. Its totient is φ = 115084800.

The previous prime is 130649759. The next prime is 130649789. The reversal of 130649779 is 977946031.

It is a cyclic number.

It is not a de Polignac number, because 130649779 - 2¹¹ = 130647731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130649759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27199 + ... + 31639.

It is an arithmetic number, because the mean of its divisors is an integer number (9203824).

Almost surely, 2^130649779 is an apocalyptic number.

130649779 is a deficient number, since it is larger than the sum of its proper divisors (16611405).

130649779 is a wasteful number, since it uses less digits than its factorization.

130649779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4558.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 130649779 is about 11430.2134275787. The cubic root of 130649779 is about 507.4223120342.

The spelling of 130649779 in words is "one hundred thirty million, six hundred forty-nine thousand, seven hundred seventy-nine".