1395197437 has 2 divisors, whose sum is σ = 1395197438. Its totient is φ = 1395197436.

The previous prime is 1395197423. The next prime is 1395197459. The reversal of 1395197437 is 7347915931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1343515716 + 51681721 = 36654^2 + 7189^2 .

It is an emirp because it is prime and its reverse (7347915931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1395197437 is a prime.

It is a super-2 number, since 2×1395197437² = 3893151776422737938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1395197407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697598718 + 697598719.

It is an arithmetic number, because the mean of its divisors is an integer number (697598719).

Almost surely, 2^1395197437 is an apocalyptic number.

It is an amenable number.

1395197437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395197437 is an equidigital number, since it uses as much as digits as its factorization.

1395197437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 714420, while the sum is 49.

The square root of 1395197437 is about 37352.3417873632. The cubic root of 1395197437 is about 1117.4082922672.

The spelling of 1395197437 in words is "one billion, three hundred ninety-five million, one hundred ninety-seven thousand, four hundred thirty-seven".