1398770164538 has 8 divisors (see below), whose sum is σ = 2221576143732. Its totient is φ = 658244783296.

The previous prime is 1398770164529. The next prime is 1398770164559. The reversal of 1398770164538 is 8354610778931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1353748539049 + 45021625489 = 1163507^2 + 212183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20570149445 + ... + 20570149512.

Almost surely, 2^{1398770164538} is an apocalyptic number.

1398770164538 is a deficient number, since it is larger than the sum of its proper divisors (822805979194).

1398770164538 is a wasteful number, since it uses less digits than its factorization.

1398770164538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41140298976.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 1398770164538 in words is "one trillion, three hundred ninety-eight billion, seven hundred seventy million, one hundred sixty-four thousand, five hundred thirty-eight".