1630656142 has 4 divisors (see below), whose sum is σ = 2445984216. Its totient is φ = 815328070.

The previous prime is 1630656127. The next prime is 1630656151. The reversal of 1630656142 is 2416560361.

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

It is a junction number, because it is equal to n+sod(n) for n = 1630656098 and 1630656107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407664034 + ... + 407664037.

It is an arithmetic number, because the mean of its divisors is an integer number (611496054).

Almost surely, 2^1630656142 is an apocalyptic number.

1630656142 is a deficient number, since it is larger than the sum of its proper divisors (815328074).

1630656142 is an equidigital number, since it uses as much as digits as its factorization.

1630656142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815328073.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1630656142 is about 40381.3836068057. The cubic root of 1630656142 is about 1177.0298138231.

The spelling of 1630656142 in words is "one billion, six hundred thirty million, six hundred fifty-six thousand, one hundred forty-two".