1390227238757 has 4 divisors (see below), whose sum is σ = 1588831130016. Its totient is φ = 1191623347500.

The previous prime is 1390227238747. The next prime is 1390227238759. The reversal of 1390227238757 is 7578327220931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1390227238757 - 2¹⁰ = 1390227237733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390227238759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99301945619 + ... + 99301945632.

It is an arithmetic number, because the mean of its divisors is an integer number (397207782504).

Almost surely, 2^{1390227238757} is an apocalyptic number.

It is an amenable number.

1390227238757 is a deficient number, since it is larger than the sum of its proper divisors (198603891259).

1390227238757 is an equidigital number, since it uses as much as digits as its factorization.

1390227238757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198603891258.

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 1390227238757 in words is "one trillion, three hundred ninety billion, two hundred twenty-seven million, two hundred thirty-eight thousand, seven hundred fifty-seven".