1630458780 has 96 divisors (see below), whose sum is σ = 5088303360. Its totient is φ = 387671040.

The previous prime is 1630458779. The next prime is 1630458787. The reversal of 1630458780 is 878540361.

1630458780 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630458787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22686 + ... + 61445.

It is an arithmetic number, because the mean of its divisors is an integer number (53003160).

Almost surely, 2^1630458780 is an apocalyptic number.

1630458780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630458780 is an abundant number, since it is smaller than the sum of its proper divisors (3457844580).

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

1630458780 is a wasteful number, since it uses less digits than its factorization.

1630458780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84179 (or 84177 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1630458780 is about 40378.9398077760. The cubic root of 1630458780 is about 1176.9823257140.

The spelling of 1630458780 in words is "one billion, six hundred thirty million, four hundred fifty-eight thousand, seven hundred eighty".