1380157131492 has 120 divisors (see below), whose sum is σ = 3803688193536. Its totient is φ = 435513272832.

The previous prime is 1380157131481. The next prime is 1380157131527. The reversal of 1380157131492 is 2941317510831.

1380157131492 is a `hidden beast` number, since 1 + 3 + 8 + 0 + 1 + 571 + 31 + 49 + 2 = 666.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 231828 + ... + 1677515.

Almost surely, 2^{1380157131492} is an apocalyptic number.

1380157131492 is a gapful number since it is divisible by the number (12) 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 1380157131492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1901844096768).

1380157131492 is an abundant number, since it is smaller than the sum of its proper divisors (2423531062044).

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

1380157131492 is a wasteful number, since it uses less digits than its factorization.

1380157131492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909479 (or 1909468 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 1380157131492 in words is "one trillion, three hundred eighty billion, one hundred fifty-seven million, one hundred thirty-one thousand, four hundred ninety-two".