1391407462189 has 4 divisors (see below), whose sum is σ = 1395852853756. Its totient is φ = 1386962070624.

The previous prime is 1391407462187. The next prime is 1391407462199. The reversal of 1391407462189 is 9812647041931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 365248592164 + 1026158870025 = 604358^2 + 1012995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1391407462189 - 2¹ = 1391407462187 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 (1391407462187) 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, 2222695314 + ... + 2222695939.

It is an arithmetic number, because the mean of its divisors is an integer number (348963213439).

Almost surely, 2^{1391407462189} is an apocalyptic number.

It is an amenable number.

1391407462189 is a deficient number, since it is larger than the sum of its proper divisors (4445391567).

1391407462189 is an equidigital number, since it uses as much as digits as its factorization.

1391407462189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445391566.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 1391407462189 in words is "one trillion, three hundred ninety-one billion, four hundred seven million, four hundred sixty-two thousand, one hundred eighty-nine".