1630402135 has 4 divisors (see below), whose sum is σ = 1956482568. Its totient is φ = 1304321704.

The previous prime is 1630402133. The next prime is 1630402157. The reversal of 1630402135 is 5312040361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5312040361 = 6703 ⋅792487.

It is a cyclic number.

It is not a de Polignac number, because 1630402135 - 2¹ = 1630402133 is a prime.

It is a super-2 number, since 2×1630402135² = 5316422243625116450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630402133) 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, 163040209 + ... + 163040218.

It is an arithmetic number, because the mean of its divisors is an integer number (489120642).

Almost surely, 2^1630402135 is an apocalyptic number.

1630402135 is a deficient number, since it is larger than the sum of its proper divisors (326080433).

1630402135 is an equidigital number, since it uses as much as digits as its factorization.

1630402135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326080432.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1630402135 is about 40378.2383840603. The cubic root of 1630402135 is about 1176.9686954121.

Adding to 1630402135 its reverse (5312040361), we get a palindrome (6942442496).

The spelling of 1630402135 in words is "one billion, six hundred thirty million, four hundred two thousand, one hundred thirty-five".