1630323345 has 24 divisors (see below), whose sum is σ = 3034399104. Its totient is φ = 745290336.

The previous prime is 1630323337. The next prime is 1630323347. The reversal of 1630323345 is 5433230361.

It is not a de Polignac number, because 1630323345 - 2³ = 1630323337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1630323347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1108329 + ... + 1109798.

It is an arithmetic number, because the mean of its divisors is an integer number (126433296).

Almost surely, 2^1630323345 is an apocalyptic number.

1630323345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1630323345 is a deficient number, since it is larger than the sum of its proper divisors (1404075759).

1630323345 is a wasteful number, since it uses less digits than its factorization.

1630323345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218149 (or 2218142 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 1630323345 is about 40377.2627229732. The cubic root of 1630323345 is about 1176.9497359061.

The spelling of 1630323345 in words is "one billion, six hundred thirty million, three hundred twenty-three thousand, three hundred forty-five".