1397026185 has 16 divisors (see below), whose sum is σ = 2265863424. Its totient is φ = 734873472.

The previous prime is 1397026177. The next prime is 1397026199. The reversal of 1397026185 is 5816207931.

It is not a de Polignac number, because 1397026185 - 2³ = 1397026177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636817 + ... + 639006.

It is an arithmetic number, because the mean of its divisors is an integer number (141616464).

Almost surely, 2^1397026185 is an apocalyptic number.

1397026185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1397026185 is a deficient number, since it is larger than the sum of its proper divisors (868837239).

1397026185 is a wasteful number, since it uses less digits than its factorization.

1397026185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275904.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1397026185 is about 37376.8134677102. The cubic root of 1397026185 is about 1117.8962915418.

The spelling of 1397026185 in words is "one billion, three hundred ninety-seven million, twenty-six thousand, one hundred eighty-five".