1380744751764 has 96 divisors (see below), whose sum is σ = 3746201460736. Its totient is φ = 387658172160.

The previous prime is 1380744751759. The next prime is 1380744751777. The reversal of 1380744751764 is 4671574470831.

It is a happy number.

It is a super-2 number, since 2×1380744751764² (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 31 ways as a sum of consecutive naturals, for example, 1246329 + ... + 2077215.

Almost surely, 2^{1380744751764} is an apocalyptic number.

1380744751764 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 1380744751764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1873100730368).

1380744751764 is an abundant number, since it is smaller than the sum of its proper divisors (2365456708972).

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

1380744751764 is a wasteful number, since it uses less digits than its factorization.

1380744751764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831245 (or 831243 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 57.

The spelling of 1380744751764 in words is "one trillion, three hundred eighty billion, seven hundred forty-four million, seven hundred fifty-one thousand, seven hundred sixty-four".