1790130649 has 4 divisors (see below), whose sum is σ = 1790314164. Its totient is φ = 1789947136.

The previous prime is 1790130613. The next prime is 1790130697. The reversal of 1790130649 is 9460310971.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1034265600 + 755865049 = 32160^2 + 27493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1790130649 - 2⁷ = 1790130521 is a prime.

It is a super-2 number, since 2×1790130649² = 6409135480978322402, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1790170649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76252 + ... + 96925.

It is an arithmetic number, because the mean of its divisors is an integer number (447578541).

Almost surely, 2^1790130649 is an apocalyptic number.

It is an amenable number.

1790130649 is a deficient number, since it is larger than the sum of its proper divisors (183515).

1790130649 is a wasteful number, since it uses less digits than its factorization.

1790130649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183514.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 1790130649 is about 42309.9355825555. The cubic root of 1790130649 is about 1214.2130868455.

The spelling of 1790130649 in words is "one billion, seven hundred ninety million, one hundred thirty thousand, six hundred forty-nine".