1438430668 has 24 divisors (see below), whose sum is σ = 2578458960. Its totient is φ = 701762880.

The previous prime is 1438430641. The next prime is 1438430687. The reversal of 1438430668 is 8660348341.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186978 + ... + 194518.

It is an arithmetic number, because the mean of its divisors is an integer number (107435790).

Almost surely, 2^1438430668 is an apocalyptic number.

It is an amenable number.

1438430668 is a deficient number, since it is larger than the sum of its proper divisors (1140028292).

1438430668 is a wasteful number, since it uses less digits than its factorization.

1438430668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8697 (or 8695 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 1438430668 is about 37926.6485205324. The cubic root of 1438430668 is about 1128.8328638915.

The spelling of 1438430668 in words is "one billion, four hundred thirty-eight million, four hundred thirty thousand, six hundred sixty-eight".