1630804045 has 32 divisors (see below), whose sum is σ = 2184668640. Its totient is φ = 1160801280.

The previous prime is 1630804039. The next prime is 1630804051. The reversal of 1630804045 is 5404080361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1630804039) and next prime (1630804051).

It can be written as a sum of positive squares in 16 ways, for example, as 556865604 + 1073938441 = 23598^2 + 32771^2 .

It is not a de Polignac number, because 1630804045 - 2⁷ = 1630803917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1630803998 and 1630804016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259035 + ... + 265255.

It is an arithmetic number, because the mean of its divisors is an integer number (68270895).

Almost surely, 2^1630804045 is an apocalyptic number.

It is an amenable number.

1630804045 is a deficient number, since it is larger than the sum of its proper divisors (553864595).

1630804045 is a wasteful number, since it uses less digits than its factorization.

1630804045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1630804045 is about 40383.2148918335. The cubic root of 1630804045 is about 1177.0653988806.

The spelling of 1630804045 in words is "one billion, six hundred thirty million, eight hundred four thousand, forty-five".