1383970638 has 16 divisors (see below), whose sum is σ = 2768657616. Its totient is φ = 461204160.

The previous prime is 1383970633. The next prime is 1383970639. The reversal of 1383970638 is 8360793831.

It is a super-2 number, since 2×1383970638² = 3830749453692254088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383970631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2853 + ... + 52688.

It is an arithmetic number, because the mean of its divisors is an integer number (173041101).

Almost surely, 2^1383970638 is an apocalyptic number.

1383970638 is an abundant number, since it is smaller than the sum of its proper divisors (1384686978).

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

1383970638 is a wasteful number, since it uses less digits than its factorization.

1383970638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59699.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 1383970638 is about 37201.7558456587. The cubic root of 1383970638 is about 1114.4030501921.

The spelling of 1383970638 in words is "one billion, three hundred eighty-three million, nine hundred seventy thousand, six hundred thirty-eight".