1438789067 has 8 divisors (see below), whose sum is σ = 1564598016. Its totient is φ = 1317555072.

The previous prime is 1438789063. The next prime is 1438789109. The reversal of 1438789067 is 7609878341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1438789067 - 2² = 1438789063 is a prime.

It is a super-2 number, since 2×1438789067² = 4140227958637460978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438789061) 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, 1143083 + ... + 1144340.

It is an arithmetic number, because the mean of its divisors is an integer number (195574752).

Almost surely, 2^1438789067 is an apocalyptic number.

1438789067 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1438789067 is a deficient number, since it is larger than the sum of its proper divisors (125808949).

1438789067 is a wasteful number, since it uses less digits than its factorization.

1438789067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287477.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 1438789067 is about 37931.3731230495. The cubic root of 1438789067 is about 1128.9266093374.

The spelling of 1438789067 in words is "one billion, four hundred thirty-eight million, seven hundred eighty-nine thousand, sixty-seven".