1388342012 has 12 divisors (see below), whose sum is σ = 2432747016. Its totient is φ = 693271440.

The previous prime is 1388342003. The next prime is 1388342017. The reversal of 1388342012 is 2102438831.

It is a self number, because there is not a number n which added to its sum of digits gives 1388342012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388342017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221414 + ... + 227597.

It is an arithmetic number, because the mean of its divisors is an integer number (202728918).

Almost surely, 2^1388342012 is an apocalyptic number.

It is an amenable number.

1388342012 is a deficient number, since it is larger than the sum of its proper divisors (1044405004).

1388342012 is a wasteful number, since it uses less digits than its factorization.

1388342012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449788 (or 449786 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1388342012 is about 37260.4617792104. The cubic root of 1388342012 is about 1115.5751252823.

The spelling of 1388342012 in words is "one billion, three hundred eighty-eight million, three hundred forty-two thousand, twelve".