1397697908270 has 16 divisors (see below), whose sum is σ = 2553406329168. Its totient is φ = 550734697920.

The previous prime is 1397697908263. The next prime is 1397697908287. The reversal of 1397697908270 is 728097967931.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1397697908270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043057471 + ... + 1043058810.

It is an arithmetic number, because the mean of its divisors is an integer number (159587895573).

Almost surely, 2^{1397697908270} is an apocalyptic number.

1397697908270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1397697908270 is a deficient number, since it is larger than the sum of its proper divisors (1155708420898).

1397697908270 is a wasteful number, since it uses less digits than its factorization.

1397697908270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086116355.

The product of its (nonzero) digits is 72013536, while the sum is 68.

The spelling of 1397697908270 in words is "one trillion, three hundred ninety-seven billion, six hundred ninety-seven million, nine hundred eight thousand, two hundred seventy".