1630720742 has 32 divisors (see below), whose sum is σ = 2859107328. Its totient is φ = 683027136.

The previous prime is 1630720703. The next prime is 1630720753. The reversal of 1630720742 is 2470270361.

It is a junction number, because it is equal to n+sod(n) for n = 1630720699 and 1630720708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621818 + ... + 624434.

It is an arithmetic number, because the mean of its divisors is an integer number (89347104).

Almost surely, 2^1630720742 is an apocalyptic number.

1630720742 is a deficient number, since it is larger than the sum of its proper divisors (1228386586).

1630720742 is a wasteful number, since it uses less digits than its factorization.

1630720742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620.

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

The square root of 1630720742 is about 40382.1834724176. The cubic root of 1630720742 is about 1177.0453566712.

The spelling of 1630720742 in words is "one billion, six hundred thirty million, seven hundred twenty thousand, seven hundred forty-two".