1395557063 has 2 divisors, whose sum is σ = 1395557064. Its totient is φ = 1395557062.

The previous prime is 1395557027. The next prime is 1395557069. The reversal of 1395557063 is 3607555931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1395557063 - 2⁸ = 1395556807 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1395557069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697778531 + 697778532.

It is an arithmetic number, because the mean of its divisors is an integer number (697778532).

Almost surely, 2^1395557063 is an apocalyptic number.

1395557063 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395557063 is an equidigital number, since it uses as much as digits as its factorization.

1395557063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 425250, while the sum is 44.

The square root of 1395557063 is about 37357.1554457777. The cubic root of 1395557063 is about 1117.5042917155.

The spelling of 1395557063 in words is "one billion, three hundred ninety-five million, five hundred fifty-seven thousand, sixty-three".