1630720760 has 32 divisors (see below), whose sum is σ = 3674289600. Its totient is φ = 651369600.

The previous prime is 1630720759. The next prime is 1630720783. The reversal of 1630720760 is 670270361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410 + ... + 57110.

It is an arithmetic number, because the mean of its divisors is an integer number (114821550).

Almost surely, 2^1630720760 is an apocalyptic number.

1630720760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630720760 is an abundant number, since it is smaller than the sum of its proper divisors (2043568840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1630720760 is a wasteful number, since it uses less digits than its factorization.

1630720760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57431 (or 57427 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 1630720760 is about 40382.1836952882. The cubic root of 1630720760 is about 1177.0453610020.

The spelling of 1630720760 in words is "one billion, six hundred thirty million, seven hundred twenty thousand, seven hundred sixty".