1478651904 has 78 divisors (see below), whose sum is σ = 4271246096. Its totient is φ = 492871680.

The previous prime is 1478651869. The next prime is 1478651969. The reversal of 1478651904 is 4091568741.

It is a super-2 number, since 2×1478651904² = 4372822906405650432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1478651904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16809 + ... + 56919.

Almost surely, 2^1478651904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1478651904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2135623048).

1478651904 is an abundant number, since it is smaller than the sum of its proper divisors (2792594192).

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

1478651904 is an equidigital number, since it uses as much as digits as its factorization.

1478651904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40141 (or 40116 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1478651904 is about 38453.2430881974. The cubic root of 1478651904 is about 1139.2577254762.

It can be divided in two parts, 147865 and 1904, that added together give a square (149769 = 387²).

The spelling of 1478651904 in words is "one billion, four hundred seventy-eight million, six hundred fifty-one thousand, nine hundred four".