1630440770 has 16 divisors (see below), whose sum is σ = 3354049728. Its totient is φ = 559008240.

The previous prime is 1630440739. The next prime is 1630440821. The reversal of 1630440770 is 770440361.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11645936 + ... + 11646075.

It is an arithmetic number, because the mean of its divisors is an integer number (209628108).

Almost surely, 2^1630440770 is an apocalyptic number.

1630440770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1630440770 is an abundant number, since it is smaller than the sum of its proper divisors (1723608958).

1630440770 is a wasteful number, since it uses less digits than its factorization.

1630440770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23292025.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 1630440770 is about 40378.7167948661. The cubic root of 1630440770 is about 1176.9779920606.

The spelling of 1630440770 in words is "one billion, six hundred thirty million, four hundred forty thousand, seven hundred seventy".