1396491612549 has 16 divisors (see below), whose sum is σ = 2031911930880. Its totient is φ = 846087134960.

The previous prime is 1396491612511. The next prime is 1396491612589. The reversal of 1396491612549 is 9452161946931.

It is a cyclic number.

It is not a de Polignac number, because 1396491612549 - 2¹² = 1396491608453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1396491612492 and 1396491612501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396491612589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6680967 + ... + 6886820.

It is an arithmetic number, because the mean of its divisors is an integer number (126994495680).

Almost surely, 2^{1396491612549} is an apocalyptic number.

It is an amenable number.

1396491612549 is a deficient number, since it is larger than the sum of its proper divisors (635420318331).

1396491612549 is a wasteful number, since it uses less digits than its factorization.

1396491612549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13570920.

The product of its digits is 12597120, while the sum is 60.

The spelling of 1396491612549 in words is "one trillion, three hundred ninety-six billion, four hundred ninety-one million, six hundred twelve thousand, five hundred forty-nine".