1630497783 has 4 divisors (see below), whose sum is σ = 2173997048. Its totient is φ = 1086998520.

The previous prime is 1630497763. The next prime is 1630497809. The reversal of 1630497783 is 3877940361.

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

It is not a de Polignac number, because 1630497783 - 2⁵ = 1630497751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630497703) 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, 271749628 + ... + 271749633.

It is an arithmetic number, because the mean of its divisors is an integer number (543499262).

Almost surely, 2^1630497783 is an apocalyptic number.

1630497783 is a deficient number, since it is larger than the sum of its proper divisors (543499265).

1630497783 is an equidigital number, since it uses as much as digits as its factorization.

1630497783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543499264.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 1630497783 is about 40379.4227670481. The cubic root of 1630497783 is about 1176.9917106953.

The spelling of 1630497783 in words is "one billion, six hundred thirty million, four hundred ninety-seven thousand, seven hundred eighty-three".