1630794378 has 8 divisors (see below), whose sum is σ = 3261588768. Its totient is φ = 543598124.

The previous prime is 1630794367. The next prime is 1630794409. The reversal of 1630794378 is 8734970361.

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

1630794378 is an admirable number.

It is a super-3 number, since 3×1630794378³ (a number of 29 digits) contains 333 as substring.

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, 135899526 + ... + 135899537.

It is an arithmetic number, because the mean of its divisors is an integer number (407698596).

Almost surely, 2^1630794378 is an apocalyptic number.

1630794378 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.

1630794378 is a wasteful number, since it uses less digits than its factorization.

1630794378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271799068.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 1630794378 is about 40383.0952008387. The cubic root of 1630794378 is about 1177.0630730925.

It can be divided in two parts, 16307 and 94378, that added together give a triangular number (110685 = T₄₇₀).

The spelling of 1630794378 in words is "one billion, six hundred thirty million, seven hundred ninety-four thousand, three hundred seventy-eight".