1131445921390 has 16 divisors (see below), whose sum is σ = 2125150600608. Its totient is φ = 432901048096.

The previous prime is 1131445921379. The next prime is 1131445921391. The reversal of 1131445921390 is 931295441311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131445921391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2459664817 + ... + 2459665276.

It is an arithmetic number, because the mean of its divisors is an integer number (132821912538).

Almost surely, 2^{1131445921390} is an apocalyptic number.

1131445921390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131445921390 is a deficient number, since it is larger than the sum of its proper divisors (993704679218).

1131445921390 is a wasteful number, since it uses less digits than its factorization.

1131445921390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919330123.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 1131445921390 in words is "one trillion, one hundred thirty-one billion, four hundred forty-five million, nine hundred twenty-one thousand, three hundred ninety".