1438145152 has 32 divisors (see below), whose sum is σ = 2885702400. Its totient is φ = 713890560.

The previous prime is 1438145147. The next prime is 1438145167. The reversal of 1438145152 is 2515418341.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1438145152² = 4136522956442206208, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 22624 + ... + 58207.

It is an arithmetic number, because the mean of its divisors is an integer number (90178200).

Almost surely, 2^1438145152 is an apocalyptic number.

It is an amenable number.

1438145152 is an abundant number, since it is smaller than the sum of its proper divisors (1447557248).

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

1438145152 is an equidigital number, since it uses as much as digits as its factorization.

1438145152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80984 (or 80972 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 1438145152 is about 37922.8842784934. The cubic root of 1438145152 is about 1128.7581711081.

The spelling of 1438145152 in words is "one billion, four hundred thirty-eight million, one hundred forty-five thousand, one hundred fifty-two".