1384920989812 has 24 divisors (see below), whose sum is σ = 2427229042056. Its totient is φ = 691427294208.

The previous prime is 1384920989779. The next prime is 1384920989831. The reversal of 1384920989812 is 2189890294831.

It can be written as a sum of positive squares in 4 ways, for example, as 679381468516 + 705539521296 = 824246^2 + 839964^2 .

It is a super-2 number, since 2×1384920989812² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 19200888 + ... + 19272880.

It is an arithmetic number, because the mean of its divisors is an integer number (101134543419).

Almost surely, 2^{1384920989812} is an apocalyptic number.

It is an amenable number.

1384920989812 is a deficient number, since it is larger than the sum of its proper divisors (1042308052244).

1384920989812 is a wasteful number, since it uses less digits than its factorization.

1384920989812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79107 (or 79105 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 64.

It can be divided in two parts, 1384920 and 989812, that added together give a palindrome (2374732).

The spelling of 1384920989812 in words is "one trillion, three hundred eighty-four billion, nine hundred twenty million, nine hundred eighty-nine thousand, eight hundred twelve".