1380923544 has 256 divisors, whose sum is σ = 4737761280. Its totient is φ = 323781120.

The previous prime is 1380923527. The next prime is 1380923561. The reversal of 1380923544 is 4453290831.

It is an interprime number because it is at equal distance from previous prime (1380923527) and next prime (1380923561).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1128517 + ... + 1129739.

It is an arithmetic number, because the mean of its divisors is an integer number (18506880).

Almost surely, 2^1380923544 is an apocalyptic number.

1380923544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380923544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2368880640).

1380923544 is an abundant number, since it is smaller than the sum of its proper divisors (3356837736).

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

1380923544 is a wasteful number, since it uses less digits than its factorization.

1380923544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1380923544 is about 37160.7796473648. The cubic root of 1380923544 is about 1113.5845872590.

The spelling of 1380923544 in words is "one billion, three hundred eighty million, nine hundred twenty-three thousand, five hundred forty-four".