1630323378 has 24 divisors (see below), whose sum is σ = 3627838188. Its totient is φ = 528753312.

The previous prime is 1630323347. The next prime is 1630323389. The reversal of 1630323378 is 8733230361.

It is a happy number.

1630323378 is a `hidden beast` number, since 16 + 303 + 2 + 337 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1627880409 + 2442969 = 40347^2 + 1563^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1223301 + ... + 1224632.

Almost surely, 2^1630323378 is an apocalyptic number.

1630323378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1630323378 is an abundant number, since it is smaller than the sum of its proper divisors (1997514810).

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

1630323378 is a wasteful number, since it uses less digits than its factorization.

1630323378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447978 (or 2447975 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 1630323378 is about 40377.2631316190. The cubic root of 1630323378 is about 1176.9497438471.

The spelling of 1630323378 in words is "one billion, six hundred thirty million, three hundred twenty-three thousand, three hundred seventy-eight".