1398990186321 has 96 divisors (see below), whose sum is σ = 2354594070528. Its totient is φ = 732311798400.

The previous prime is 1398990186311. The next prime is 1398990186329. The reversal of 1398990186321 is 1236810998931.

It is not a de Polignac number, because 1398990186321 - 2⁶ = 1398990186257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1398990186329) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 410620600 + ... + 410624006.

It is an arithmetic number, because the mean of its divisors is an integer number (24527021568).

Almost surely, 2^{1398990186321} is an apocalyptic number.

It is an amenable number.

1398990186321 is a deficient number, since it is larger than the sum of its proper divisors (955603884207).

1398990186321 is a wasteful number, since it uses less digits than its factorization.

1398990186321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011 (or 5004 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 60.

The spelling of 1398990186321 in words is "one trillion, three hundred ninety-eight billion, nine hundred ninety million, one hundred eighty-six thousand, three hundred twenty-one".