1380168197 has 4 divisors (see below), whose sum is σ = 1380489900. Its totient is φ = 1379846496.

The previous prime is 1380168193. The next prime is 1380168211. The reversal of 1380168197 is 7918610831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51638596 + 1328529601 = 7186^2 + 36449^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380168197 - 2² = 1380168193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380168193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154328 + ... + 163025.

It is an arithmetic number, because the mean of its divisors is an integer number (345122475).

Almost surely, 2^1380168197 is an apocalyptic number.

It is an amenable number.

1380168197 is a deficient number, since it is larger than the sum of its proper divisors (321703).

1380168197 is an equidigital number, since it uses as much as digits as its factorization.

1380168197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321702.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1380168197 is about 37150.6150285564. The cubic root of 1380168197 is about 1113.3815115246.

The spelling of 1380168197 in words is "one billion, three hundred eighty million, one hundred sixty-eight thousand, one hundred ninety-seven".