1478691630 has 192 divisors, whose sum is σ = 4352624640. Its totient is φ = 345772800.

The previous prime is 1478691629. The next prime is 1478691659. The reversal of 1478691630 is 361968741.

It is a happy number.

1478691630 is a `hidden beast` number, since 1 + 4 + 7 + 8 + 6 + 9 + 1 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 2139585 + ... + 2140275.

It is an arithmetic number, because the mean of its divisors is an integer number (22669920).

Almost surely, 2^1478691630 is an apocalyptic number.

1478691630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1478691630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176312320).

1478691630 is an abundant number, since it is smaller than the sum of its proper divisors (2873933010).

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

1478691630 is a wasteful number, since it uses less digits than its factorization.

1478691630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1478691630 is about 38453.7596341372. The cubic root of 1478691630 is about 1139.2679279557.

The spelling of 1478691630 in words is "one billion, four hundred seventy-eight million, six hundred ninety-one thousand, six hundred thirty".