1438173984 has 48 divisors (see below), whose sum is σ = 4065610752. Its totient is φ = 442514688.

The previous prime is 1438173983. The next prime is 1438174039. The reversal of 1438173984 is 4893718341.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1438173983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574944 + ... + 577439.

It is an arithmetic number, because the mean of its divisors is an integer number (84700224).

Almost surely, 2^1438173984 is an apocalyptic number.

It is an amenable number.

1438173984 is an abundant number, since it is smaller than the sum of its proper divisors (2627436768).

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

1438173984 is a wasteful number, since it uses less digits than its factorization.

1438173984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152409 (or 1152401 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 1438173984 is about 37923.2644164502. The cubic root of 1438173984 is about 1128.7657141896.

The spelling of 1438173984 in words is "one billion, four hundred thirty-eight million, one hundred seventy-three thousand, nine hundred eighty-four".