1438478160 has 80 divisors (see below), whose sum is σ = 5096328576. Its totient is φ = 328794624.

The previous prime is 1438478159. The next prime is 1438478191. The reversal of 1438478160 is 618748341.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426439 + ... + 429798.

Almost surely, 2^1438478160 is an apocalyptic number.

1438478160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1438478160 is an abundant number, since it is smaller than the sum of its proper divisors (3657850416).

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

1438478160 is a wasteful number, since it uses less digits than its factorization.

1438478160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856260 (or 856254 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1438478160 is about 37927.2746186699. The cubic root of 1438478160 is about 1128.8452871390.

The spelling of 1438478160 in words is "one billion, four hundred thirty-eight million, four hundred seventy-eight thousand, one hundred sixty".