1438504152 has 32 divisors (see below), whose sum is σ = 3636673200. Its totient is φ = 474113024.

The previous prime is 1438504141. The next prime is 1438504159. The reversal of 1438504152 is 2514058341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438504159) 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, 334593 + ... + 338864.

Almost surely, 2^1438504152 is an apocalyptic number.

1438504152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1438504152 is an abundant number, since it is smaller than the sum of its proper divisors (2198169048).

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

1438504152 is a wasteful number, since it uses less digits than its factorization.

1438504152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673555 (or 673551 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 1438504152 is about 37927.6172729055. The cubic root of 1438504152 is about 1128.8520861693.

The spelling of 1438504152 in words is "one billion, four hundred thirty-eight million, five hundred four thousand, one hundred fifty-two".