1630697394 has 8 divisors (see below), whose sum is σ = 3261394800. Its totient is φ = 543565796.

The previous prime is 1630697359. The next prime is 1630697423. The reversal of 1630697394 is 4937960361.

1630697394 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

1630697394 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135891444 + ... + 135891455.

It is an arithmetic number, because the mean of its divisors is an integer number (407674350).

Almost surely, 2^1630697394 is an apocalyptic number.

1630697394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1630697394 is a wasteful number, since it uses less digits than its factorization.

1630697394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271782904.

The product of its (nonzero) digits is 734832, while the sum is 48.

The square root of 1630697394 is about 40381.8943834982. The cubic root of 1630697394 is about 1177.0397391579.

The spelling of 1630697394 in words is "one billion, six hundred thirty million, six hundred ninety-seven thousand, three hundred ninety-four".